{"title":"GEO Knife Belluf","description":"\u003cp data-path-to-node=\"1\"\u003eDesigned by Fabian Hobbelen, the GEO Knife Belluf series combines sleek aesthetics with elite mechanical functionality for modern everyday carry. These premium Folding Knives feature a razor-sharp M390 stainless steel blade, delivering exceptional wear resistance, corrosion resistance, and edge retention for demanding daily tasks. Ergonomically contoured handles are available in high-strength Titanium or textured G10, paired with a secure Crossbar Lock mechanism that ensures rock-solid lockup and smooth ambidextrous deployment. Elevate your EDC gear lineup with the visionary design and craftsmanship of GEO Knife.\u003c\/p\u003e\n\u003cp data-path-to-node=\"2\"\u003e \u003c\/p\u003e","products":[{"product_id":"geo-knife-belluf-geo2508a","title":"GEO Knife Belluf GEO2508A M390 Blade G10 Handle Crossbar Lock Folding Knife","description":"\u003cp\u003eThe GEO Knife GEO2508A delivers exceptional craftsmanship with its premium Bohler M390 blade and durable G10 handle. This compact folding knife features outstanding ergonomics, providing an intuitive, secure grip for outdoor adventures and daily carry. M390 stainless steel offers industry-leading corrosion resistance and edge retention, though it requires diamond abrasives for sharpening. The crossbar lock ensures reliable blade security, while the lightweight 73.1g design maximizes portability. With a 2.4-inch blade and ambidextrous functionality, this stylish EDC knife combines ultralight utility with superior performance—the ideal choice for serious knife enthusiasts.\u003c\/p\u003e\n\u003ch2 class=\"product-title\"\u003e\u003cstrong\u003eM390 Blade Introduction\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/edcmall.cn\/collections\/m390\"\u003eM390\u003c\/a\u003e is an advanced powder-metallurgical stainless steel utilizing high chromium and vanadium content to deliver exceptional wear resistance and industry-leading corrosion resilience. It excels at retaining a razor-sharp edge under prolonged use; however, this extreme hardness renders the blade notably difficult to sharpen or reprofile without diamond abrasives. Additionally, its fine microstructure, while offering superior edge stability, sacrifices some structural toughness and may be more prone to chipping under heavy lateral stress.\u003c\/p\u003e\n\u003ch2 class=\"MsoNormal\"\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\n\u003c\/h2\u003e\n\u003cp\u003eModel: GEO2508A\u003cbr\u003eProduct Type: Folding Knife\u003cbr\u003eBrand: GEO\u003cbr\u003eOverall Length: 5.7 inch \/ 145mm\u003cbr\u003eBlade Length: 2.4 inch \/ 60mm\u003cbr\u003e\u003cbr\u003eHandle Length:  3.3 inch \/ 85mm\u003cbr\u003eHandle Thickness: 0.4 inch \/ 10mm\u003cbr\u003eBlade Width: 1.1 inch \/ 28 mm\u003cbr\u003eBlade Thickness: 0.1 inch \/ 3.1mm\u003cbr\u003eBlade Material: Bohler M390\u003cbr\u003e\u003cbr\u003eHeat Treatment: Vacuum \u0026amp; Cryogenic\u003cbr\u003eBlade Hardness: HRC60-62\u003cbr\u003eBlade Type: Drop Point\u003cbr\u003eBlade Finish: Stonewash\u003cbr\u003eBlade Grind: Flat\u003cbr\u003e\u003cbr\u003eHandle Material: G10\u003cbr\u003eLock Type: Crossbar\u003cbr\u003eDexterity: Ambidextrous\u003cbr\u003eWashers Material: \u003cspan\u003eBronze Washers\u003c\/span\u003e\u003cbr\u003eBack Spacer: N\/A\u003cbr\u003e\u003cbr\u003eClip Material: 6AL4V Titanium\u003cbr\u003eClip Position: Tip-up, Right\u003cbr\u003ePivot Cap: 6AL4V Titanium \u003cbr\u003ePivot Collar : Titanium\u003cbr\u003eScrews Material: 6AL4V Titanium\u003cbr\u003e\u003cbr\u003eItem Weight: 2.58 oz \/ 73.1g\u003cbr\u003eDesigner: Fabian Hobbelen\u003cbr\u003eCountry of Origin: China\u003c\/p\u003e\n\u003ch2\u003eGEO Knife Belluf GEO2508A - Product Overview\u003c\/h2\u003e\u003cp\u003eThe GEO Knife Belluf GEO2508A is a compact 145 mm gentleman's folder by Fabian Hobbelen, built around a wide Bohler \u003ca href=\"\/es\/collections\/m390\"\u003eM390\u003c\/a\u003e drop-point blade, Black G10 scales and a smooth \u003ca href=\"\/es\/collections\/crossbar-lock-knives\"\u003ecrossbar lock\u003c\/a\u003e action. See every \u003ca href=\"\/es\/collections\/geo-knife\"\u003eGEO Knife\u003c\/a\u003e release and the rest of our \u003ca href=\"\/es\/collections\/folding-knives\"\u003efolding knives\u003c\/a\u003e at EDCMALL.\u003c\/p\u003e\u003ch2\u003eGEO Knife Belluf GEO2508A - Bohler M390 - Super Steel Built to Outcut the Field\u003c\/h2\u003e\u003cp\u003eBohler M390 is the reason this knife holds its edge weeks longer than a mid-steel folder. The third-generation powder-metallurgy stainless from Austria carries a dense carbide population that resists abrasive wear at 60-62 HRC, yet its 20 percent chromium matrix still cleans up like a true stainless after food prep or rain. GEO hardens every blade under vacuum and cryogenic treatment, then finishes each one to stonewashed. The trade-offs are honest: M390 wants diamond abrasives when it finally does need sharpening, and it chips rather than bends under prying - treat it like the precision instrument it is and it will outlast several lesser knives. Combined with G10, bronze washers and a 6AL4V titanium clip, the GEO2508A is built as a buy-once-carry-for-years working tool.\u003c\/p\u003e\u003ch2\u003eGEO Knife Belluf GEO2508A - Core Selling Points\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBohler M390 blade at 60-62 HRC - exceptional edge retention with genuine stainless corrosion resistance.\u003c\/li\u003e\n\u003cli\u003eAmbidextrous crossbar lock - spring-bar lock is fully ambidextrous and keeps fingers clear of the blade path.\u003c\/li\u003e\n\u003cli\u003eBlack G10 scales contoured to a 85 mm handle that grips far larger than its footprint.\u003c\/li\u003e\n\u003cli\u003eBronze washers at the pivot deliver a smooth, detented opening that will not go gritty with pocket lint.\u003c\/li\u003e\n\u003cli\u003e6AL4V titanium pocket clip, tip-up right carry, rides deep and low in the pocket.\u003c\/li\u003e\n\u003cli\u003eFlat-ground 60 mm drop point handles cardboard, food prep and rope without wedging.\u003c\/li\u003e\n\u003cli\u003e73.1 g on the scale - a shorts-pocket or dress-pants folder that never prints.\u003c\/li\u003e\n\u003cli\u003eVacuum and cryogenic heat treatment for full hardness conversion and long-term dimensional stability.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eGEO Knife Belluf GEO2508A - Where It Earns Its Pocket Time\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDaily pocket carry\u003c\/strong\u003e - at 73.1 g and 145 mm closed-friendly footprint it rides unnoticed until needed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarehouse and cardboard duty\u003c\/strong\u003e - M390 edge retention shrugs weeks of box cutting between touch-ups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCamp kitchen and food prep\u003c\/strong\u003e - stainless steel cleans up after acidic food without staining.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeekend trail and EDC errands\u003c\/strong\u003e - the crossbar lock opens and closes with either hand in any weather.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesk and dress carry\u003c\/strong\u003e - the 145 mm closed frame and deep-carry clip vanish under a shirt hem.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cdl\u003e\n\u003cdt\u003e\u003cstrong\u003eIs Bohler M390 worth it over cheaper steels?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eYes, if you cut daily and hate sharpening. M390 holds a working edge roughly three times longer than 8Cr13MoV-class steels and still resists rust; the cost is slower sharpening on diamond plates.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eHow does a crossbar lock work?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eA spring-loaded bar spans the handle and wedges behind the blade tang when it opens. Pull the bar back with your index or middle finger and the blade folds shut - fully ambidextrous, no liner to flex.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eIs the GEO2508A legal to carry?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eFolding knives with a manual crossbar lock are legal to carry in most jurisdictions, but blade-length rules vary - check your local law before carrying.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eDoes the titanium handle scratch?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eAnodized titanium develops honest carry marks over time; the oxide layer beneath stays corrosion-proof. Stonewashed and dark finishes hide wear best.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat sharpening setup works for M390?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eDiamond or CBN stones from 320 to 1000 grit, then a 3000-grit ceramic or leather strop. Conventional aluminium-oxide stones barely cut 60-62 HRC steel.\u003c\/dd\u003e\n\u003c\/dl\u003e\u003ch2\u003eGEO Knife Belluf GEO2508A - Steel Comparison Table\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSteel\u003c\/th\u003e\n\u003cth\u003eTypical HRC\u003c\/th\u003e\n\u003cth\u003eEdge Retention\u003c\/th\u003e\n\u003cth\u003eCorrosion Resistance\u003c\/th\u003e\n\u003cth\u003eToughness\u003c\/th\u003e\n\u003cth\u003eSharpening Ease\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eBohler M390\u003c\/strong\u003e (this knife)\u003c\/td\u003e\n\u003ctd\u003e60-62\u003c\/td\u003e\n\u003ctd\u003eExceptional\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003ctd\u003eDifficult (diamond)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCPM-20CV\u003c\/td\u003e\n\u003ctd\u003e59-61\u003c\/td\u003e\n\u003ctd\u003eExceptional\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003ctd\u003eDifficult\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCPM-S35VN\u003c\/td\u003e\n\u003ctd\u003e58-60\u003c\/td\u003e\n\u003ctd\u003eVery Good\u003c\/td\u003e\n\u003ctd\u003eVery Good\u003c\/td\u003e\n\u003ctd\u003eBetter\u003c\/td\u003e\n\u003ctd\u003eModerate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e14C28N\u003c\/td\u003e\n\u003ctd\u003e59-61\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003ctd\u003eVery Easy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eD2\u003c\/td\u003e\n\u003ctd\u003e58-61\u003c\/td\u003e\n\u003ctd\u003eVery Good\u003c\/td\u003e\n\u003ctd\u003eFair (oil it)\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003ctd\u003eModerate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eGlossary of Key Terms\u003c\/h2\u003e\u003cstrong\u003eBohler M390\u003c\/strong\u003e\u003cbr\u003eA third-generation powder-metallurgy stainless from Bohler loaded with chromium, vanadium and molybdenum carbides. At 60-62 HRC it holds a working edge longer than almost any other production knife steel and still resists corrosion like a true stainless.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eCrossbar Lock\u003c\/strong\u003e\u003cbr\u003eA spring-loaded steel bar that spans the handle and wedges behind the blade tang. It is fully ambidextrous, keeps your fingers out of the blade path on closing and is among the strongest folder locks in production.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003e6AL4V Titanium\u003c\/strong\u003e\u003cbr\u003eThe Ti-6Al-4V aerospace alloy used for GEO's scales, clip, pivot cap and screws. It is roughly 45 percent lighter than steel, completely corrosion-proof and takes a hard, wear-resistant anodized surface.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eBronze Washers\u003c\/strong\u003e\u003cbr\u003ePhosphor-bronze pivot washers that give a smooth, controlled opening and shrug off pocket grit far better than bare titanium-on-steel contact.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eDrop Point\u003c\/strong\u003e\u003cbr\u003eA convex spine that sweeps down toward a strong, controllable point - the default all-round blade profile for hard-use EDC.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eFlat Grind\u003c\/strong\u003e\u003cbr\u003eBlade flats that taper in a straight line from the spine to the edge. It slices better than a hollow grind and stays much tougher behind the apex.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eVacuum and Cryogenic Heat Treatment\u003c\/strong\u003e\u003cbr\u003eA two-stage quench: vacuum hardening prevents decarburization and scale, then a deep cryogenic cycle converts retained austenite so the steel reaches its full hardness and dimensional stability.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eHRC\u003c\/strong\u003e\u003cbr\u003eRockwell Hardness C scale: the industry standard for reporting blade hardness. Higher numbers mean a harder, more wear-resistant edge that is also less forgiving of lateral load.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eStonewash Finish\u003c\/strong\u003e\u003cbr\u003eA tumbling process that bead-blasts the steel into a uniform matte grey. It hides carry scratches and kills glare far better than a satin finish.\u003cbr\u003e\u003cbr\u003e\u003ch2\u003eGEO Knife Belluf GEO2508A - Who Should Buy \/ Who Should Skip\u003c\/h2\u003e\u003ch3\u003eWho Should Buy\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eYou carry a knife every day and want edge retention measured in weeks, not days.\u003c\/li\u003e\n\u003cli\u003eYou want one ambidextrous folder both left- and right-handed users can run safely.\u003c\/li\u003e\n\u003cli\u003eYou collect M390 Black G10 builds and want the whole GEO Knife line covered.\u003c\/li\u003e\n\u003cli\u003eYou need a lightweight EDC that still punches above its weight in hard cutting tasks.\u003c\/li\u003e\n\u003cli\u003eYou value titanium hardware, bronze washers and cryogenic heat treat as long-term reliability cues.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWho Should Skip\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eYou pry with your knife - M390 chips laterally; a tougher 3V or Nitro-V blade is the better beater.\u003c\/li\u003e\n\u003cli\u003eYou sharpen on budget oil stones only - 60-62 HRC steel needs diamond abrasives.\u003c\/li\u003e\n\u003cli\u003ePrefer heavy over-built knives - at 73.1 g this folder prioritizes light carry.\u003c\/li\u003e\n\u003cli\u003eYou need a knife for saltwater daily use - rinse discipline is still required despite stainless steel.\u003c\/li\u003e\n\u003cli\u003eYour local law caps blades below this model's length - check the specs before ordering.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eGEO Knife Belluf GEO2508A - Care \u0026amp; Maintenance\u003c\/h2\u003e\u003col\u003e\n\u003cli\u003eWipe the blade dry after every use - M390 is stainless, not stain-proof, and pocket humidity will still speckle it.\u003c\/li\u003e\n\u003cli\u003eOne drop of quality knife oil at the pivot and crossbar contact points monthly, then cycle the action to spread it.\u003c\/li\u003e\n\u003cli\u003eBlow pocket lint out of the handle channel with compressed air before oiling so grit never grinds inside the pivot.\u003c\/li\u003e\n\u003cli\u003eSharpen on diamond or CBN plates; at 60-62 HRC conventional aluminium-oxide stones barely cut this steel.\u003c\/li\u003e\n\u003cli\u003eUse light, consistent strokes and finish on a fine ceramic or leather strop - heavy pressure chips a hard apex.\u003c\/li\u003e\n\u003cli\u003eRinse with warm water and mild dish soap when it gets grimy, then dry thoroughly before it goes back in the pocket.\u003c\/li\u003e\n\u003cli\u003eNever pry, twist or use the tip as a screwdriver; hard steel trades impact toughness for wear resistance.\u003c\/li\u003e\n\u003cli\u003eKeep the crossbar track clean; a lint-packed omega spring channel is the number one cause of a sluggish action.\u003c\/li\u003e\n\u003cli\u003eRe-torque clip and body screws with the correct Torx driver - titanium hardware gall if you overtighten it.\u003c\/li\u003e\n\u003c\/ol\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"GEO Knife Belluf GEO2508A\",\"sku\":\"GEO2508A\",\"mpn\":\"GEO2508A\",\"productID\":\"GEO2508A\",\"brand\":{\"@type\":\"Brand\",\"name\":\"GEO Knife\"},\"manufacturer\":\"GEO Knife\",\"material\":\"Bohler M390 blade, G10\",\"color\":\"G10\",\"category\":\"Knives \u003e Folding Knives \u003e EDC\",\"description\":\"The GEO Knife Belluf GEO2508A is a compact 145 mm gentleman's folder by Fabian Hobbelen, built around a wide Bohler \u003ca href=\\\"\/collections\/m390\\\"\u003eM390\u003c\/a\u003e drop-point blade, Black G10 scales and a smooth \u003ca href=\\\"\/collections\/crossbar-lock-knives\\\"\u003ecrossbar lock\u003c\/a\u003e action. See every \u003ca href=\\\"\",\"additionalProperty\":[{\"@type\":\"PropertyValue\",\"name\":\"Model\",\"value\":\"GEO2508A\"},{\"@type\":\"PropertyValue\",\"name\":\"Product Type\",\"value\":\"Folding Knife\"},{\"@type\":\"PropertyValue\",\"name\":\"Brand\",\"value\":\"GEO Knife\"},{\"@type\":\"PropertyValue\",\"name\":\"Model Line\",\"value\":\"Belluf\"},{\"@type\":\"PropertyValue\",\"name\":\"Overall Length\",\"value\":\"5.7 inch \/ 145 mm\"},{\"@type\":\"PropertyValue\",\"name\":\"Blade Length\",\"value\":\"2.4 inch \/ 60 mm\"},{\"@type\":\"PropertyValue\",\"name\":\"Handle Length\",\"value\":\"3.3 inch \/ 85 mm\"},{\"@type\":\"PropertyValue\",\"name\":\"Handle Thickness\",\"value\":\"0.4 inch \/ 10 mm\"},{\"@type\":\"PropertyValue\",\"name\":\"Blade Width\",\"value\":\"1.1 inch \/ 28 mm\"},{\"@type\":\"PropertyValue\",\"name\":\"Blade Thickness\",\"value\":\"0.1 inch \/ 3.1 mm\"},{\"@type\":\"PropertyValue\",\"name\":\"Blade Material\",\"value\":\"Bohler M390\"},{\"@type\":\"PropertyValue\",\"name\":\"Blade Hardness\",\"value\":\"HRC 60-62\"},{\"@type\":\"PropertyValue\",\"name\":\"Blade Type\",\"value\":\"Drop Point\"},{\"@type\":\"PropertyValue\",\"name\":\"Blade Finish\",\"value\":\"Stonewash\"},{\"@type\":\"PropertyValue\",\"name\":\"Blade Grind\",\"value\":\"Flat\"},{\"@type\":\"PropertyValue\",\"name\":\"Heat Treatment\",\"value\":\"Vacuum \u0026 Cryogenic\"},{\"@type\":\"PropertyValue\",\"name\":\"Handle Material\",\"value\":\"G10\"},{\"@type\":\"PropertyValue\",\"name\":\"Lock Type\",\"value\":\"Crossbar\"},{\"@type\":\"PropertyValue\",\"name\":\"Dexterity\",\"value\":\"Ambidextrous\"},{\"@type\":\"PropertyValue\",\"name\":\"Washers\",\"value\":\"Bronze Washers\"},{\"@type\":\"PropertyValue\",\"name\":\"Pocket Clip\",\"value\":\"6AL4V Titanium, Tip-up Right\"},{\"@type\":\"PropertyValue\",\"name\":\"Item Weight\",\"value\":\"2.58 oz \/ 73.1 g\"},{\"@type\":\"PropertyValue\",\"name\":\"Designer\",\"value\":\"Fabian Hobbelen\"},{\"@type\":\"PropertyValue\",\"name\":\"Country of Origin\",\"value\":\"China\"}],\"offers\":{\"@type\":\"Offer\",\"price\":\"87.20\",\"priceCurrency\":\"USD\",\"availability\":\"https:\/\/schema.org\/InStock\",\"itemCondition\":\"https:\/\/schema.org\/NewCondition\"},\"weight\":{\"@type\":\"QuantitativeValue\",\"value\":73.1,\"unitCode\":\"GRM\",\"name\":\"73.1 g (2.58 oz)\"}}\u003c\/script\u003e","brand":"GEO Knife","offers":[{"title":"Default Title","offer_id":50533897306309,"sku":"GEO2508A","price":87.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0584\/0699\/4117\/files\/01_0dc2a1ab-5a92-435b-b2d1-c98eb9fe050c.jpg?v=1790245865"},{"product_id":"geo-knife-belluf-geo2508b","title":"GEO Knife Belluf GEO2508B M390 Blade G10 Handle Crossbar Lock Folding Knife","description":"\u003cp\u003eThe GEO Knife Belluf GEO2508B combines exceptional craftsmanship with advanced materials for the discerning outdoor enthusiast. Featuring a premium Bohler M390 blade—a powder-metallurgical stainless steel renowned for exceptional wear resistance and edge retention—paired with a durable G10 handle, this knife delivers superior performance. The ergonomic design ensures a secure, intuitive grip in any condition, while the crossbar lock mechanism provides reliable blade security. At just 73.1g, this ambidextrous folding knife offers ultralight utility ideal for daily carry and backcountry adventures. Titanium hardware and bronze washers enhance durability and smooth operation. An excellent EDC choice for those demanding quality and reliability.\u003c\/p\u003e\n\u003ch2 class=\"product-title\"\u003e\u003cstrong\u003eM390 Blade Introduction\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/edcmall.cn\/collections\/m390\"\u003eM390\u003c\/a\u003e is an advanced powder-metallurgical stainless steel utilizing high chromium and vanadium content to deliver exceptional wear resistance and industry-leading corrosion resilience. It excels at retaining a razor-sharp edge under prolonged use; however, this extreme hardness renders the blade notably difficult to sharpen or reprofile without diamond abrasives. Additionally, its fine microstructure, while offering superior edge stability, sacrifices some structural toughness and may be more prone to chipping under heavy lateral stress.\u003c\/p\u003e\n\u003ch2 class=\"MsoNormal\"\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\n\u003c\/h2\u003e\n\u003cp\u003eModel: GEO2508B\u003cbr\u003eProduct Type: Folding Knife\u003cbr\u003eBrand: GEO\u003cbr\u003eOverall Length: 5.7 inch \/ 145mm\u003cbr\u003eBlade Length: 2.4 inch \/ 60mm\u003cbr\u003e\u003cbr\u003eHandle Length:  3.3 inch \/ 85mm\u003cbr\u003eHandle Thickness: 0.4 inch \/ 10mm\u003cbr\u003eBlade Width: 1.1 inch \/ 28 mm\u003cbr\u003eBlade Thickness: 0.1 inch \/ 3.1mm\u003cbr\u003eBlade Material: Bohler M390\u003cbr\u003e\u003cbr\u003eHeat Treatment: Vacuum \u0026amp; Cryogenic\u003cbr\u003eBlade Hardness: HRC60-62\u003cbr\u003eBlade Type: Drop Point\u003cbr\u003eBlade Finish: Stonewash\u003cbr\u003eBlade Grind: Flat\u003cbr\u003e\u003cbr\u003eHandle Material: G10\u003cbr\u003eLock Type: Crossbar\u003cbr\u003eDexterity: Ambidextrous\u003cbr\u003eWashers Material: \u003cspan\u003eBronze Washers\u003c\/span\u003e\u003cbr\u003eBack Spacer: N\/A\u003cbr\u003e\u003cbr\u003eClip Material: 6AL4V Titanium\u003cbr\u003eClip Position: Tip-up, Right\u003cbr\u003ePivot Cap: 6AL4V Titanium \u003cbr\u003ePivot Collar :Titanium\u003cbr\u003eScrews Material: 6AL4V Titanium\u003cbr\u003e\u003cbr\u003eItem Weight:  2.58 oz \/ 73.1g\u003cbr\u003eDesigner: Fabian Hobbelen\u003cbr\u003eCountry of Origin: China\u003c\/p\u003e\n\u003ch2\u003eGEO Knife Belluf GEO2508B - Product Overview\u003c\/h2\u003e\u003cp\u003eThe GEO Knife Belluf GEO2508B is a compact 145 mm gentleman's folder by Fabian Hobbelen, built around a wide Bohler \u003ca href=\"\/es\/collections\/m390\"\u003eM390\u003c\/a\u003e drop-point blade, Purple G10 scales and a smooth \u003ca href=\"\/es\/collections\/crossbar-lock-knives\"\u003ecrossbar lock\u003c\/a\u003e action. See every \u003ca href=\"\/es\/collections\/geo-knife\"\u003eGEO Knife\u003c\/a\u003e release and the rest of our \u003ca href=\"\/es\/collections\/folding-knives\"\u003efolding knives\u003c\/a\u003e at EDCMALL.\u003c\/p\u003e\u003ch2\u003eGEO Knife Belluf GEO2508B - Bohler M390 - Super Steel Built to Outcut the Field\u003c\/h2\u003e\u003cp\u003eBohler M390 is the reason this knife holds its edge weeks longer than a mid-steel folder. The third-generation powder-metallurgy stainless from Austria carries a dense carbide population that resists abrasive wear at 60-62 HRC, yet its 20 percent chromium matrix still cleans up like a true stainless after food prep or rain. GEO hardens every blade under vacuum and cryogenic treatment, then finishes each one to stonewashed. The trade-offs are honest: M390 wants diamond abrasives when it finally does need sharpening, and it chips rather than bends under prying - treat it like the precision instrument it is and it will outlast several lesser knives. Combined with G10, bronze washers and a 6AL4V titanium clip, the GEO2508B is built as a buy-once-carry-for-years working tool.\u003c\/p\u003e\u003ch2\u003eGEO Knife Belluf GEO2508B - Core Selling Points\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBohler M390 blade at 60-62 HRC - exceptional edge retention with genuine stainless corrosion resistance.\u003c\/li\u003e\n\u003cli\u003eAmbidextrous crossbar lock - spring-bar lock is fully ambidextrous and keeps fingers clear of the blade path.\u003c\/li\u003e\n\u003cli\u003ePurple G10 scales contoured to a 85 mm handle that grips far larger than its footprint.\u003c\/li\u003e\n\u003cli\u003eBronze washers at the pivot deliver a smooth, detented opening that will not go gritty with pocket lint.\u003c\/li\u003e\n\u003cli\u003e6AL4V titanium pocket clip, tip-up right carry, rides deep and low in the pocket.\u003c\/li\u003e\n\u003cli\u003eFlat-ground 60 mm drop point handles cardboard, food prep and rope without wedging.\u003c\/li\u003e\n\u003cli\u003e73.1 g on the scale - a shorts-pocket or dress-pants folder that never prints.\u003c\/li\u003e\n\u003cli\u003eVacuum and cryogenic heat treatment for full hardness conversion and long-term dimensional stability.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eGEO Knife Belluf GEO2508B - Where It Earns Its Pocket Time\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDaily pocket carry\u003c\/strong\u003e - at 73.1 g and 145 mm closed-friendly footprint it rides unnoticed until needed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarehouse and cardboard duty\u003c\/strong\u003e - M390 edge retention shrugs weeks of box cutting between touch-ups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCamp kitchen and food prep\u003c\/strong\u003e - stainless steel cleans up after acidic food without staining.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeekend trail and EDC errands\u003c\/strong\u003e - the crossbar lock opens and closes with either hand in any weather.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesk and dress carry\u003c\/strong\u003e - the 145 mm closed frame and deep-carry clip vanish under a shirt hem.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cdl\u003e\n\u003cdt\u003e\u003cstrong\u003eIs Bohler M390 worth it over cheaper steels?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eYes, if you cut daily and hate sharpening. M390 holds a working edge roughly three times longer than 8Cr13MoV-class steels and still resists rust; the cost is slower sharpening on diamond plates.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eHow does a crossbar lock work?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eA spring-loaded bar spans the handle and wedges behind the blade tang when it opens. Pull the bar back with your index or middle finger and the blade folds shut - fully ambidextrous, no liner to flex.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eIs the GEO2508B legal to carry?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eFolding knives with a manual crossbar lock are legal to carry in most jurisdictions, but blade-length rules vary - check your local law before carrying.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eDoes the titanium handle scratch?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eAnodized titanium develops honest carry marks over time; the oxide layer beneath stays corrosion-proof. Stonewashed and dark finishes hide wear best.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat sharpening setup works for M390?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eDiamond or CBN stones from 320 to 1000 grit, then a 3000-grit ceramic or leather strop. Conventional aluminium-oxide stones barely cut 60-62 HRC steel.\u003c\/dd\u003e\n\u003c\/dl\u003e\u003ch2\u003eGEO Knife Belluf GEO2508B - Steel Comparison Table\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSteel\u003c\/th\u003e\n\u003cth\u003eTypical HRC\u003c\/th\u003e\n\u003cth\u003eEdge Retention\u003c\/th\u003e\n\u003cth\u003eCorrosion Resistance\u003c\/th\u003e\n\u003cth\u003eToughness\u003c\/th\u003e\n\u003cth\u003eSharpening Ease\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eBohler M390\u003c\/strong\u003e (this knife)\u003c\/td\u003e\n\u003ctd\u003e60-62\u003c\/td\u003e\n\u003ctd\u003eExceptional\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003ctd\u003eDifficult (diamond)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCPM-20CV\u003c\/td\u003e\n\u003ctd\u003e59-61\u003c\/td\u003e\n\u003ctd\u003eExceptional\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003ctd\u003eDifficult\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCPM-S35VN\u003c\/td\u003e\n\u003ctd\u003e58-60\u003c\/td\u003e\n\u003ctd\u003eVery Good\u003c\/td\u003e\n\u003ctd\u003eVery Good\u003c\/td\u003e\n\u003ctd\u003eBetter\u003c\/td\u003e\n\u003ctd\u003eModerate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e14C28N\u003c\/td\u003e\n\u003ctd\u003e59-61\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003ctd\u003eVery Easy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eD2\u003c\/td\u003e\n\u003ctd\u003e58-61\u003c\/td\u003e\n\u003ctd\u003eVery Good\u003c\/td\u003e\n\u003ctd\u003eFair (oil it)\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003ctd\u003eModerate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eGlossary of Key Terms\u003c\/h2\u003e\u003cstrong\u003eBohler M390\u003c\/strong\u003e\u003cbr\u003eA third-generation powder-metallurgy stainless from Bohler loaded with chromium, vanadium and molybdenum carbides. At 60-62 HRC it holds a working edge longer than almost any other production knife steel and still resists corrosion like a true stainless.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eCrossbar Lock\u003c\/strong\u003e\u003cbr\u003eA spring-loaded steel bar that spans the handle and wedges behind the blade tang. It is fully ambidextrous, keeps your fingers out of the blade path on closing and is among the strongest folder locks in production.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003e6AL4V Titanium\u003c\/strong\u003e\u003cbr\u003eThe Ti-6Al-4V aerospace alloy used for GEO's scales, clip, pivot cap and screws. It is roughly 45 percent lighter than steel, completely corrosion-proof and takes a hard, wear-resistant anodized surface.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eBronze Washers\u003c\/strong\u003e\u003cbr\u003ePhosphor-bronze pivot washers that give a smooth, controlled opening and shrug off pocket grit far better than bare titanium-on-steel contact.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eDrop Point\u003c\/strong\u003e\u003cbr\u003eA convex spine that sweeps down toward a strong, controllable point - the default all-round blade profile for hard-use EDC.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eFlat Grind\u003c\/strong\u003e\u003cbr\u003eBlade flats that taper in a straight line from the spine to the edge. It slices better than a hollow grind and stays much tougher behind the apex.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eVacuum and Cryogenic Heat Treatment\u003c\/strong\u003e\u003cbr\u003eA two-stage quench: vacuum hardening prevents decarburization and scale, then a deep cryogenic cycle converts retained austenite so the steel reaches its full hardness and dimensional stability.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eHRC\u003c\/strong\u003e\u003cbr\u003eRockwell Hardness C scale: the industry standard for reporting blade hardness. Higher numbers mean a harder, more wear-resistant edge that is also less forgiving of lateral load.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eStonewash Finish\u003c\/strong\u003e\u003cbr\u003eA tumbling process that bead-blasts the steel into a uniform matte grey. It hides carry scratches and kills glare far better than a satin finish.\u003cbr\u003e\u003cbr\u003e\u003ch2\u003eGEO Knife Belluf GEO2508B - Who Should Buy \/ Who Should Skip\u003c\/h2\u003e\u003ch3\u003eWho Should Buy\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eYou carry a knife every day and want edge retention measured in weeks, not days.\u003c\/li\u003e\n\u003cli\u003eYou want one ambidextrous folder both left- and right-handed users can run safely.\u003c\/li\u003e\n\u003cli\u003eYou collect M390 Purple G10 builds and want the whole GEO Knife line covered.\u003c\/li\u003e\n\u003cli\u003eYou need a lightweight EDC that still punches above its weight in hard cutting tasks.\u003c\/li\u003e\n\u003cli\u003eYou value titanium hardware, bronze washers and cryogenic heat treat as long-term reliability cues.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWho Should Skip\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eYou pry with your knife - M390 chips laterally; a tougher 3V or Nitro-V blade is the better beater.\u003c\/li\u003e\n\u003cli\u003eYou sharpen on budget oil stones only - 60-62 HRC steel needs diamond abrasives.\u003c\/li\u003e\n\u003cli\u003ePrefer heavy over-built knives - at 73.1 g this folder prioritizes light carry.\u003c\/li\u003e\n\u003cli\u003eYou need a knife for saltwater daily use - rinse discipline is still required despite stainless steel.\u003c\/li\u003e\n\u003cli\u003eYour local law caps blades below this model's length - check the specs before ordering.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eGEO Knife Belluf GEO2508B - Care \u0026amp; Maintenance\u003c\/h2\u003e\u003col\u003e\n\u003cli\u003eWipe the blade dry after every use - M390 is stainless, not stain-proof, and pocket humidity will still speckle it.\u003c\/li\u003e\n\u003cli\u003eOne drop of quality knife oil at the pivot and crossbar contact points monthly, then cycle the action to spread it.\u003c\/li\u003e\n\u003cli\u003eBlow pocket lint out of the handle channel with compressed air before oiling so grit never grinds inside the pivot.\u003c\/li\u003e\n\u003cli\u003eSharpen on diamond or CBN plates; at 60-62 HRC conventional aluminium-oxide stones barely cut this steel.\u003c\/li\u003e\n\u003cli\u003eUse light, consistent strokes and finish on a fine ceramic or leather strop - heavy pressure chips a hard apex.\u003c\/li\u003e\n\u003cli\u003eRinse with warm water and mild dish soap when it gets grimy, then dry thoroughly before it goes back in the pocket.\u003c\/li\u003e\n\u003cli\u003eNever pry, twist or use the tip as a screwdriver; hard steel trades impact toughness for wear resistance.\u003c\/li\u003e\n\u003cli\u003eKeep the crossbar track clean; a lint-packed omega spring channel is the number one cause of a sluggish action.\u003c\/li\u003e\n\u003cli\u003eRe-torque clip and body screws with the correct Torx driver - titanium hardware gall if you overtighten it.\u003c\/li\u003e\n\u003c\/ol\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"GEO Knife Belluf GEO2508B\",\"sku\":\"GEO2508B\",\"mpn\":\"GEO2508B\",\"productID\":\"GEO2508B\",\"brand\":{\"@type\":\"Brand\",\"name\":\"GEO Knife\"},\"manufacturer\":\"GEO Knife\",\"material\":\"Bohler M390 blade, G10\",\"color\":\"G10\",\"category\":\"Knives \u003e Folding Knives \u003e EDC\",\"description\":\"The GEO Knife Belluf GEO2508B is a compact 145 mm gentleman's folder by Fabian Hobbelen, built around a wide Bohler \u003ca href=\\\"\/collections\/m390\\\"\u003eM390\u003c\/a\u003e drop-point blade, Purple G10 scales and a smooth \u003ca href=\\\"\/collections\/crossbar-lock-knives\\\"\u003ecrossbar lock\u003c\/a\u003e action. See every \u003ca href=\",\"additionalProperty\":[{\"@type\":\"PropertyValue\",\"name\":\"Model\",\"value\":\"GEO2508B\"},{\"@type\":\"PropertyValue\",\"name\":\"Product Type\",\"value\":\"Folding Knife\"},{\"@type\":\"PropertyValue\",\"name\":\"Brand\",\"value\":\"GEO Knife\"},{\"@type\":\"PropertyValue\",\"name\":\"Model Line\",\"value\":\"Belluf\"},{\"@type\":\"PropertyValue\",\"name\":\"Overall Length\",\"value\":\"5.7 inch \/ 145 mm\"},{\"@type\":\"PropertyValue\",\"name\":\"Blade Length\",\"value\":\"2.4 inch \/ 60 mm\"},{\"@type\":\"PropertyValue\",\"name\":\"Handle Length\",\"value\":\"3.3 inch \/ 85 mm\"},{\"@type\":\"PropertyValue\",\"name\":\"Handle Thickness\",\"value\":\"0.4 inch \/ 10 mm\"},{\"@type\":\"PropertyValue\",\"name\":\"Blade Width\",\"value\":\"1.1 inch \/ 28 mm\"},{\"@type\":\"PropertyValue\",\"name\":\"Blade Thickness\",\"value\":\"0.1 inch \/ 3.1 mm\"},{\"@type\":\"PropertyValue\",\"name\":\"Blade Material\",\"value\":\"Bohler M390\"},{\"@type\":\"PropertyValue\",\"name\":\"Blade Hardness\",\"value\":\"HRC 60-62\"},{\"@type\":\"PropertyValue\",\"name\":\"Blade Type\",\"value\":\"Drop Point\"},{\"@type\":\"PropertyValue\",\"name\":\"Blade Finish\",\"value\":\"Stonewash\"},{\"@type\":\"PropertyValue\",\"name\":\"Blade Grind\",\"value\":\"Flat\"},{\"@type\":\"PropertyValue\",\"name\":\"Heat Treatment\",\"value\":\"Vacuum \u0026 Cryogenic\"},{\"@type\":\"PropertyValue\",\"name\":\"Handle Material\",\"value\":\"G10\"},{\"@type\":\"PropertyValue\",\"name\":\"Lock Type\",\"value\":\"Crossbar\"},{\"@type\":\"PropertyValue\",\"name\":\"Dexterity\",\"value\":\"Ambidextrous\"},{\"@type\":\"PropertyValue\",\"name\":\"Washers\",\"value\":\"Bronze Washers\"},{\"@type\":\"PropertyValue\",\"name\":\"Pocket Clip\",\"value\":\"6AL4V Titanium, Tip-up Right\"},{\"@type\":\"PropertyValue\",\"name\":\"Item Weight\",\"value\":\"2.58 oz \/ 73.1 g\"},{\"@type\":\"PropertyValue\",\"name\":\"Designer\",\"value\":\"Fabian Hobbelen\"},{\"@type\":\"PropertyValue\",\"name\":\"Country of Origin\",\"value\":\"China\"}],\"offers\":{\"@type\":\"Offer\",\"price\":\"87.20\",\"priceCurrency\":\"USD\",\"availability\":\"https:\/\/schema.org\/InStock\",\"itemCondition\":\"https:\/\/schema.org\/NewCondition\"},\"weight\":{\"@type\":\"QuantitativeValue\",\"value\":73.1,\"unitCode\":\"GRM\",\"name\":\"73.1 g (2.58 oz)\"}}\u003c\/script\u003e","brand":"GEO Knife","offers":[{"title":"Default Title","offer_id":50533983256773,"sku":"GEO2508B","price":87.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0584\/0699\/4117\/files\/01_eb6a76d2-f255-4f37-bfb0-69ce10f0b97a.jpg?v=1790246032"},{"product_id":"geo-knife-belluf-geo2508c","title":"GEO Knife Belluf GEO2508C M390 Blade G10 Handle Crossbar Lock Folding Knife","description":"\u003cp\u003eThe GEO Knife Belluf GEO2508C combines exceptional craftsmanship with outstanding performance. Featuring a premium M390 stainless steel blade—renowned for wear resistance and edge retention—paired with a durable G10 handle, this folding knife delivers reliability for outdoor enthusiasts and daily carry. The ergonomic design ensures a secure, intuitive grip in any position. With a Crossbar lock mechanism, ambidextrous operation, and lightweight construction at just 2.58 oz, it's the ideal EDC companion. Designed by Fabian Hobbelen and finished with stonewash, this knife represents the perfect balance of durability, style, and utility for camping, hiking, and everyday adventures.\u003c\/p\u003e\n\u003ch2 class=\"product-title\"\u003e\u003cstrong\u003eM390 Blade Introduction\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/edcmall.cn\/collections\/m390\"\u003eM390\u003c\/a\u003e is an advanced powder-metallurgical stainless steel utilizing high chromium and vanadium content to deliver exceptional wear resistance and industry-leading corrosion resilience. It excels at retaining a razor-sharp edge under prolonged use; however, this extreme hardness renders the blade notably difficult to sharpen or reprofile without diamond abrasives. Additionally, its fine microstructure, while offering superior edge stability, sacrifices some structural toughness and may be more prone to chipping under heavy lateral stress.\u003c\/p\u003e\n\u003ch2 class=\"MsoNormal\"\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\n\u003c\/h2\u003e\n\u003cp\u003eModel: GEO2508C\u003cbr\u003eProduct Type: Folding Knife\u003cbr\u003eBrand: GEO\u003cbr\u003eOverall Length: 5.7 inch \/ 145mm\u003cbr\u003eBlade Length: 2.4 inch \/ 60mm\u003cbr\u003e\u003cbr\u003eHandle Length:  3.3 inch \/ 85mm\u003cbr\u003eHandle Thickness: 0.4 inch \/ 10mm\u003cbr\u003eBlade Width: 1.1 inch \/ 28 mm\u003cbr\u003eBlade Thickness: 0.1 inch \/ 3.1mm\u003cbr\u003eBlade Material: Bohler M390\u003cbr\u003e\u003cbr\u003eHeat Treatment: Vacuum \u0026amp; Cryogenic\u003cbr\u003eBlade Hardness: HRC60-62\u003cbr\u003eBlade Type: Drop Point\u003cbr\u003eBlade Finish: Stonewash\u003cbr\u003eBlade Grind: Flat\u003cbr\u003e\u003cbr\u003eHandle Material: G10\u003cbr\u003eLock Type: Crossbar\u003cbr\u003eDexterity: Ambidextrous\u003cbr\u003eWashers Material: \u003cspan\u003eBronze Washers\u003c\/span\u003e\u003cbr\u003eBack Spacer: N\/A\u003cbr\u003e\u003cbr\u003eClip Material: 6AL4V Titanium\u003cbr\u003eClip Position: Tip-up, Right\u003cbr\u003ePivot Cap: 6AL4V Titanium \u003cbr\u003ePivot Collar :Titanium\u003cbr\u003eScrews Material: 6AL4V Titanium\u003cbr\u003e\u003cbr\u003eItem Weight:  2.58 oz \/ 73.1g\u003cbr\u003eDesigner: Fabian Hobbelen\u003cbr\u003eCountry of Origin: China\u003c\/p\u003e\n\u003ch2\u003eGEO Knife Belluf GEO2508C - Product Overview\u003c\/h2\u003e\u003cp\u003eThe GEO Knife Belluf GEO2508C is a compact 145 mm gentleman's folder by Fabian Hobbelen, built around a wide Bohler \u003ca href=\"\/es\/collections\/m390\"\u003eM390\u003c\/a\u003e drop-point blade, Teal G10 scales and a smooth \u003ca href=\"\/es\/collections\/crossbar-lock-knives\"\u003ecrossbar lock\u003c\/a\u003e action. See every \u003ca href=\"\/es\/collections\/geo-knife\"\u003eGEO Knife\u003c\/a\u003e release and the rest of our \u003ca href=\"\/es\/collections\/folding-knives\"\u003efolding knives\u003c\/a\u003e at EDCMALL.\u003c\/p\u003e\u003ch2\u003eGEO Knife Belluf GEO2508C - Bohler M390 - Super Steel Built to Outcut the Field\u003c\/h2\u003e\u003cp\u003eBohler M390 is the reason this knife holds its edge weeks longer than a mid-steel folder. The third-generation powder-metallurgy stainless from Austria carries a dense carbide population that resists abrasive wear at 60-62 HRC, yet its 20 percent chromium matrix still cleans up like a true stainless after food prep or rain. GEO hardens every blade under vacuum and cryogenic treatment, then finishes each one to stonewashed. The trade-offs are honest: M390 wants diamond abrasives when it finally does need sharpening, and it chips rather than bends under prying - treat it like the precision instrument it is and it will outlast several lesser knives. Combined with G10, bronze washers and a 6AL4V titanium clip, the GEO2508C is built as a buy-once-carry-for-years working tool.\u003c\/p\u003e\u003ch2\u003eGEO Knife Belluf GEO2508C - Core Selling Points\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBohler M390 blade at 60-62 HRC - exceptional edge retention with genuine stainless corrosion resistance.\u003c\/li\u003e\n\u003cli\u003eAmbidextrous crossbar lock - spring-bar lock is fully ambidextrous and keeps fingers clear of the blade path.\u003c\/li\u003e\n\u003cli\u003eTeal G10 scales contoured to a 85 mm handle that grips far larger than its footprint.\u003c\/li\u003e\n\u003cli\u003eBronze washers at the pivot deliver a smooth, detented opening that will not go gritty with pocket lint.\u003c\/li\u003e\n\u003cli\u003e6AL4V titanium pocket clip, tip-up right carry, rides deep and low in the pocket.\u003c\/li\u003e\n\u003cli\u003eFlat-ground 60 mm drop point handles cardboard, food prep and rope without wedging.\u003c\/li\u003e\n\u003cli\u003e73.1 g on the scale - a shorts-pocket or dress-pants folder that never prints.\u003c\/li\u003e\n\u003cli\u003eVacuum and cryogenic heat treatment for full hardness conversion and long-term dimensional stability.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eGEO Knife Belluf GEO2508C - Where It Earns Its Pocket Time\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDaily pocket carry\u003c\/strong\u003e - at 73.1 g and 145 mm closed-friendly footprint it rides unnoticed until needed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarehouse and cardboard duty\u003c\/strong\u003e - M390 edge retention shrugs weeks of box cutting between touch-ups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCamp kitchen and food prep\u003c\/strong\u003e - stainless steel cleans up after acidic food without staining.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeekend trail and EDC errands\u003c\/strong\u003e - the crossbar lock opens and closes with either hand in any weather.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesk and dress carry\u003c\/strong\u003e - the 145 mm closed frame and deep-carry clip vanish under a shirt hem.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cdl\u003e\n\u003cdt\u003e\u003cstrong\u003eIs Bohler M390 worth it over cheaper steels?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eYes, if you cut daily and hate sharpening. M390 holds a working edge roughly three times longer than 8Cr13MoV-class steels and still resists rust; the cost is slower sharpening on diamond plates.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eHow does a crossbar lock work?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eA spring-loaded bar spans the handle and wedges behind the blade tang when it opens. Pull the bar back with your index or middle finger and the blade folds shut - fully ambidextrous, no liner to flex.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eIs the GEO2508C legal to carry?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eFolding knives with a manual crossbar lock are legal to carry in most jurisdictions, but blade-length rules vary - check your local law before carrying.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eDoes the titanium handle scratch?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eAnodized titanium develops honest carry marks over time; the oxide layer beneath stays corrosion-proof. Stonewashed and dark finishes hide wear best.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat sharpening setup works for M390?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eDiamond or CBN stones from 320 to 1000 grit, then a 3000-grit ceramic or leather strop. Conventional aluminium-oxide stones barely cut 60-62 HRC steel.\u003c\/dd\u003e\n\u003c\/dl\u003e\u003ch2\u003eGEO Knife Belluf GEO2508C - Steel Comparison Table\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSteel\u003c\/th\u003e\n\u003cth\u003eTypical HRC\u003c\/th\u003e\n\u003cth\u003eEdge Retention\u003c\/th\u003e\n\u003cth\u003eCorrosion Resistance\u003c\/th\u003e\n\u003cth\u003eToughness\u003c\/th\u003e\n\u003cth\u003eSharpening Ease\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eBohler M390\u003c\/strong\u003e (this knife)\u003c\/td\u003e\n\u003ctd\u003e60-62\u003c\/td\u003e\n\u003ctd\u003eExceptional\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003ctd\u003eDifficult (diamond)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCPM-20CV\u003c\/td\u003e\n\u003ctd\u003e59-61\u003c\/td\u003e\n\u003ctd\u003eExceptional\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003ctd\u003eDifficult\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCPM-S35VN\u003c\/td\u003e\n\u003ctd\u003e58-60\u003c\/td\u003e\n\u003ctd\u003eVery Good\u003c\/td\u003e\n\u003ctd\u003eVery Good\u003c\/td\u003e\n\u003ctd\u003eBetter\u003c\/td\u003e\n\u003ctd\u003eModerate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e14C28N\u003c\/td\u003e\n\u003ctd\u003e59-61\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003ctd\u003eVery Easy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eD2\u003c\/td\u003e\n\u003ctd\u003e58-61\u003c\/td\u003e\n\u003ctd\u003eVery Good\u003c\/td\u003e\n\u003ctd\u003eFair (oil it)\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003ctd\u003eModerate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eGlossary of Key Terms\u003c\/h2\u003e\u003cstrong\u003eBohler M390\u003c\/strong\u003e\u003cbr\u003eA third-generation powder-metallurgy stainless from Bohler loaded with chromium, vanadium and molybdenum carbides. At 60-62 HRC it holds a working edge longer than almost any other production knife steel and still resists corrosion like a true stainless.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eCrossbar Lock\u003c\/strong\u003e\u003cbr\u003eA spring-loaded steel bar that spans the handle and wedges behind the blade tang. It is fully ambidextrous, keeps your fingers out of the blade path on closing and is among the strongest folder locks in production.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003e6AL4V Titanium\u003c\/strong\u003e\u003cbr\u003eThe Ti-6Al-4V aerospace alloy used for GEO's scales, clip, pivot cap and screws. It is roughly 45 percent lighter than steel, completely corrosion-proof and takes a hard, wear-resistant anodized surface.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eBronze Washers\u003c\/strong\u003e\u003cbr\u003ePhosphor-bronze pivot washers that give a smooth, controlled opening and shrug off pocket grit far better than bare titanium-on-steel contact.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eDrop Point\u003c\/strong\u003e\u003cbr\u003eA convex spine that sweeps down toward a strong, controllable point - the default all-round blade profile for hard-use EDC.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eFlat Grind\u003c\/strong\u003e\u003cbr\u003eBlade flats that taper in a straight line from the spine to the edge. It slices better than a hollow grind and stays much tougher behind the apex.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eVacuum and Cryogenic Heat Treatment\u003c\/strong\u003e\u003cbr\u003eA two-stage quench: vacuum hardening prevents decarburization and scale, then a deep cryogenic cycle converts retained austenite so the steel reaches its full hardness and dimensional stability.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eHRC\u003c\/strong\u003e\u003cbr\u003eRockwell Hardness C scale: the industry standard for reporting blade hardness. Higher numbers mean a harder, more wear-resistant edge that is also less forgiving of lateral load.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eStonewash Finish\u003c\/strong\u003e\u003cbr\u003eA tumbling process that bead-blasts the steel into a uniform matte grey. It hides carry scratches and kills glare far better than a satin finish.\u003cbr\u003e\u003cbr\u003e\u003ch2\u003eGEO Knife Belluf GEO2508C - Who Should Buy \/ Who Should Skip\u003c\/h2\u003e\u003ch3\u003eWho Should Buy\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eYou carry a knife every day and want edge retention measured in weeks, not days.\u003c\/li\u003e\n\u003cli\u003eYou want one ambidextrous folder both left- and right-handed users can run safely.\u003c\/li\u003e\n\u003cli\u003eYou collect M390 Teal G10 builds and want the whole GEO Knife line covered.\u003c\/li\u003e\n\u003cli\u003eYou need a lightweight EDC that still punches above its weight in hard cutting tasks.\u003c\/li\u003e\n\u003cli\u003eYou value titanium hardware, bronze washers and cryogenic heat treat as long-term reliability cues.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWho Should Skip\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eYou pry with your knife - M390 chips laterally; a tougher 3V or Nitro-V blade is the better beater.\u003c\/li\u003e\n\u003cli\u003eYou sharpen on budget oil stones only - 60-62 HRC steel needs diamond abrasives.\u003c\/li\u003e\n\u003cli\u003ePrefer heavy over-built knives - at 73.1 g this folder prioritizes light carry.\u003c\/li\u003e\n\u003cli\u003eYou need a knife for saltwater daily use - rinse discipline is still required despite stainless steel.\u003c\/li\u003e\n\u003cli\u003eYour local law caps blades below this model's length - check the specs before ordering.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eGEO Knife Belluf GEO2508C - Care \u0026amp; Maintenance\u003c\/h2\u003e\u003col\u003e\n\u003cli\u003eWipe the blade dry after every use - M390 is stainless, not stain-proof, and pocket humidity will still speckle it.\u003c\/li\u003e\n\u003cli\u003eOne drop of quality knife oil at the pivot and crossbar contact points monthly, then cycle the action to spread it.\u003c\/li\u003e\n\u003cli\u003eBlow pocket lint out of the handle channel with compressed air before oiling so grit never grinds inside the pivot.\u003c\/li\u003e\n\u003cli\u003eSharpen on diamond or CBN plates; at 60-62 HRC conventional aluminium-oxide stones barely cut this steel.\u003c\/li\u003e\n\u003cli\u003eUse light, consistent strokes and finish on a fine ceramic or leather strop - heavy pressure chips a hard apex.\u003c\/li\u003e\n\u003cli\u003eRinse with warm water and mild dish soap when it gets grimy, then dry thoroughly before it goes back in the pocket.\u003c\/li\u003e\n\u003cli\u003eNever pry, twist or use the tip as a screwdriver; hard steel trades impact toughness for wear resistance.\u003c\/li\u003e\n\u003cli\u003eKeep the crossbar track clean; a lint-packed omega spring channel is the number one cause of a sluggish action.\u003c\/li\u003e\n\u003cli\u003eRe-torque clip and body screws with the correct Torx driver - titanium hardware gall if you overtighten it.\u003c\/li\u003e\n\u003c\/ol\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"GEO Knife Belluf GEO2508C\",\"sku\":\"GEO2508C\",\"mpn\":\"GEO2508C\",\"productID\":\"GEO2508C\",\"brand\":{\"@type\":\"Brand\",\"name\":\"GEO Knife\"},\"manufacturer\":\"GEO Knife\",\"material\":\"Bohler M390 blade, G10\",\"color\":\"G10\",\"category\":\"Knives \u003e Folding Knives \u003e EDC\",\"description\":\"The GEO Knife Belluf GEO2508C is a compact 145 mm gentleman's folder by Fabian Hobbelen, built around a wide Bohler \u003ca href=\\\"\/collections\/m390\\\"\u003eM390\u003c\/a\u003e drop-point blade, Teal G10 scales and a smooth \u003ca href=\\\"\/collections\/crossbar-lock-knives\\\"\u003ecrossbar lock\u003c\/a\u003e action. See every \u003ca href=\\\"\/\",\"additionalProperty\":[{\"@type\":\"PropertyValue\",\"name\":\"Model\",\"value\":\"GEO2508C\"},{\"@type\":\"PropertyValue\",\"name\":\"Product Type\",\"value\":\"Folding Knife\"},{\"@type\":\"PropertyValue\",\"name\":\"Brand\",\"value\":\"GEO Knife\"},{\"@type\":\"PropertyValue\",\"name\":\"Model Line\",\"value\":\"Belluf\"},{\"@type\":\"PropertyValue\",\"name\":\"Overall Length\",\"value\":\"5.7 inch \/ 145 mm\"},{\"@type\":\"PropertyValue\",\"name\":\"Blade Length\",\"value\":\"2.4 inch \/ 60 mm\"},{\"@type\":\"PropertyValue\",\"name\":\"Handle Length\",\"value\":\"3.3 inch \/ 85 mm\"},{\"@type\":\"PropertyValue\",\"name\":\"Handle Thickness\",\"value\":\"0.4 inch \/ 10 mm\"},{\"@type\":\"PropertyValue\",\"name\":\"Blade Width\",\"value\":\"1.1 inch \/ 28 mm\"},{\"@type\":\"PropertyValue\",\"name\":\"Blade Thickness\",\"value\":\"0.1 inch \/ 3.1 mm\"},{\"@type\":\"PropertyValue\",\"name\":\"Blade Material\",\"value\":\"Bohler M390\"},{\"@type\":\"PropertyValue\",\"name\":\"Blade Hardness\",\"value\":\"HRC 60-62\"},{\"@type\":\"PropertyValue\",\"name\":\"Blade Type\",\"value\":\"Drop Point\"},{\"@type\":\"PropertyValue\",\"name\":\"Blade Finish\",\"value\":\"Stonewash\"},{\"@type\":\"PropertyValue\",\"name\":\"Blade Grind\",\"value\":\"Flat\"},{\"@type\":\"PropertyValue\",\"name\":\"Heat Treatment\",\"value\":\"Vacuum \u0026 Cryogenic\"},{\"@type\":\"PropertyValue\",\"name\":\"Handle Material\",\"value\":\"G10\"},{\"@type\":\"PropertyValue\",\"name\":\"Lock Type\",\"value\":\"Crossbar\"},{\"@type\":\"PropertyValue\",\"name\":\"Dexterity\",\"value\":\"Ambidextrous\"},{\"@type\":\"PropertyValue\",\"name\":\"Washers\",\"value\":\"Bronze Washers\"},{\"@type\":\"PropertyValue\",\"name\":\"Pocket Clip\",\"value\":\"6AL4V Titanium, Tip-up Right\"},{\"@type\":\"PropertyValue\",\"name\":\"Item Weight\",\"value\":\"2.58 oz \/ 73.1 g\"},{\"@type\":\"PropertyValue\",\"name\":\"Designer\",\"value\":\"Fabian Hobbelen\"},{\"@type\":\"PropertyValue\",\"name\":\"Country of Origin\",\"value\":\"China\"}],\"offers\":{\"@type\":\"Offer\",\"price\":\"87.20\",\"priceCurrency\":\"USD\",\"availability\":\"https:\/\/schema.org\/InStock\",\"itemCondition\":\"https:\/\/schema.org\/NewCondition\"},\"weight\":{\"@type\":\"QuantitativeValue\",\"value\":73.1,\"unitCode\":\"GRM\",\"name\":\"73.1 g (2.58 oz)\"}}\u003c\/script\u003e","brand":"GEO Knife","offers":[{"title":"Default Title","offer_id":50534016876741,"sku":"GEO2508C","price":87.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0584\/0699\/4117\/files\/01_0dc59a9f-58fa-4e9a-b284-4ac169fa9415.jpg?v=1790246571"},{"product_id":"geo-knife-belluf-geo2508d","title":"GEO Knife Belluf GEO2508D M390 Blade G10 Handle Crossbar Lock Folding Knife","description":"\u003cp\u003eThe GEO Knife Belluf GEO2508D combines precision engineering with exceptional practicality. Featuring a premium M390 stainless steel blade, this folding knife delivers outstanding edge retention and corrosion resistance. The drop-point stonewash blade, heat-treated to HRC60-62 hardness, ensures superior cutting performance. With an ergonomic G10 handle and ambidextrous crossbar lock, it provides a secure, intuitive grip for any user. Weighing just 73.1g and measuring 5.7 inches overall, this lightweight utility knife excels as an everyday carry companion. The titanium clip and hardware reflect premium construction quality. Ideal for outdoor enthusiasts and EDC users seeking reliable, durable performance.\u003c\/p\u003e\n\u003ch2 class=\"product-title\"\u003e\u003cstrong\u003eM390 Blade Introduction\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/edcmall.cn\/collections\/m390\"\u003eM390\u003c\/a\u003e is an advanced powder-metallurgical stainless steel utilizing high chromium and vanadium content to deliver exceptional wear resistance and industry-leading corrosion resilience. It excels at retaining a razor-sharp edge under prolonged use; however, this extreme hardness renders the blade notably difficult to sharpen or reprofile without diamond abrasives. Additionally, its fine microstructure, while offering superior edge stability, sacrifices some structural toughness and may be more prone to chipping under heavy lateral stress.\u003c\/p\u003e\n\u003ch2 class=\"MsoNormal\"\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\n\u003c\/h2\u003e\n\u003cp\u003eModel: GEO2508D\u003cbr\u003eProduct Type: Folding Knife\u003cbr\u003eBrand: GEO\u003cbr\u003eOverall Length: 5.7 inch \/ 145mm\u003cbr\u003eBlade Length: 2.4 inch \/ 60mm\u003cbr\u003e\u003cbr\u003eHandle Length:  3.3 inch \/ 85mm\u003cbr\u003eHandle Thickness: 0.4 inch \/ 10mm\u003cbr\u003eBlade Width: 1.1 inch \/ 28 mm\u003cbr\u003eBlade Thickness: 0.1 inch \/ 3.1mm\u003cbr\u003eBlade Material: Bohler M390\u003cbr\u003e\u003cbr\u003eHeat Treatment: Vacuum \u0026amp; Cryogenic\u003cbr\u003eBlade Hardness: HRC60-62\u003cbr\u003eBlade Type: Drop Point\u003cbr\u003eBlade Finish: Stonewash\u003cbr\u003eBlade Grind: Flat\u003cbr\u003e\u003cbr\u003eHandle Material: G10\u003cbr\u003eLock Type: Crossbar\u003cbr\u003eDexterity: Ambidextrous\u003cbr\u003eWashers Material: \u003cspan\u003eBronze Washers\u003c\/span\u003e\u003cbr\u003eBack Spacer: N\/A\u003cbr\u003e\u003cbr\u003eClip Material: 6AL4V Titanium\u003cbr\u003eClip Position: Tip-up, Right\u003cbr\u003ePivot Cap: 6AL4V Titanium \u003cbr\u003ePivot Collar :Titanium\u003cbr\u003eScrews Material: 6AL4V Titanium\u003cbr\u003e\u003cbr\u003eItem Weight: 2.58 oz \/ 73.1g\u003cbr\u003eDesigner: Fabian Hobbelen\u003cbr\u003eCountry of Origin: China\u003c\/p\u003e\n\u003ch2\u003eGEO Knife Belluf GEO2508D - Product Overview\u003c\/h2\u003e\u003cp\u003eThe GEO Knife Belluf GEO2508D is a compact 145 mm gentleman's folder by Fabian Hobbelen, built around a wide Bohler \u003ca href=\"\/es\/collections\/m390\"\u003eM390\u003c\/a\u003e drop-point blade, Orange G10 scales and a smooth \u003ca href=\"\/es\/collections\/crossbar-lock-knives\"\u003ecrossbar lock\u003c\/a\u003e action. See every \u003ca href=\"\/es\/collections\/geo-knife\"\u003eGEO Knife\u003c\/a\u003e release and the rest of our \u003ca href=\"\/es\/collections\/folding-knives\"\u003efolding knives\u003c\/a\u003e at EDCMALL.\u003c\/p\u003e\u003ch2\u003eGEO Knife Belluf GEO2508D - Bohler M390 - Super Steel Built to Outcut the Field\u003c\/h2\u003e\u003cp\u003eBohler M390 is the reason this knife holds its edge weeks longer than a mid-steel folder. The third-generation powder-metallurgy stainless from Austria carries a dense carbide population that resists abrasive wear at 60-62 HRC, yet its 20 percent chromium matrix still cleans up like a true stainless after food prep or rain. GEO hardens every blade under vacuum and cryogenic treatment, then finishes each one to stonewashed. The trade-offs are honest: M390 wants diamond abrasives when it finally does need sharpening, and it chips rather than bends under prying - treat it like the precision instrument it is and it will outlast several lesser knives. Combined with G10, bronze washers and a 6AL4V titanium clip, the GEO2508D is built as a buy-once-carry-for-years working tool.\u003c\/p\u003e\u003ch2\u003eGEO Knife Belluf GEO2508D - Core Selling Points\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBohler M390 blade at 60-62 HRC - exceptional edge retention with genuine stainless corrosion resistance.\u003c\/li\u003e\n\u003cli\u003eAmbidextrous crossbar lock - spring-bar lock is fully ambidextrous and keeps fingers clear of the blade path.\u003c\/li\u003e\n\u003cli\u003eOrange G10 scales contoured to a 85 mm handle that grips far larger than its footprint.\u003c\/li\u003e\n\u003cli\u003eBronze washers at the pivot deliver a smooth, detented opening that will not go gritty with pocket lint.\u003c\/li\u003e\n\u003cli\u003e6AL4V titanium pocket clip, tip-up right carry, rides deep and low in the pocket.\u003c\/li\u003e\n\u003cli\u003eFlat-ground 60 mm drop point handles cardboard, food prep and rope without wedging.\u003c\/li\u003e\n\u003cli\u003e73.1 g on the scale - a shorts-pocket or dress-pants folder that never prints.\u003c\/li\u003e\n\u003cli\u003eVacuum and cryogenic heat treatment for full hardness conversion and long-term dimensional stability.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eGEO Knife Belluf GEO2508D - Where It Earns Its Pocket Time\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDaily pocket carry\u003c\/strong\u003e - at 73.1 g and 145 mm closed-friendly footprint it rides unnoticed until needed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarehouse and cardboard duty\u003c\/strong\u003e - M390 edge retention shrugs weeks of box cutting between touch-ups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCamp kitchen and food prep\u003c\/strong\u003e - stainless steel cleans up after acidic food without staining.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeekend trail and EDC errands\u003c\/strong\u003e - the crossbar lock opens and closes with either hand in any weather.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesk and dress carry\u003c\/strong\u003e - the 145 mm closed frame and deep-carry clip vanish under a shirt hem.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cdl\u003e\n\u003cdt\u003e\u003cstrong\u003eIs Bohler M390 worth it over cheaper steels?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eYes, if you cut daily and hate sharpening. M390 holds a working edge roughly three times longer than 8Cr13MoV-class steels and still resists rust; the cost is slower sharpening on diamond plates.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eHow does a crossbar lock work?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eA spring-loaded bar spans the handle and wedges behind the blade tang when it opens. Pull the bar back with your index or middle finger and the blade folds shut - fully ambidextrous, no liner to flex.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eIs the GEO2508D legal to carry?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eFolding knives with a manual crossbar lock are legal to carry in most jurisdictions, but blade-length rules vary - check your local law before carrying.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eDoes the titanium handle scratch?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eAnodized titanium develops honest carry marks over time; the oxide layer beneath stays corrosion-proof. Stonewashed and dark finishes hide wear best.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat sharpening setup works for M390?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eDiamond or CBN stones from 320 to 1000 grit, then a 3000-grit ceramic or leather strop. Conventional aluminium-oxide stones barely cut 60-62 HRC steel.\u003c\/dd\u003e\n\u003c\/dl\u003e\u003ch2\u003eGEO Knife Belluf GEO2508D - Steel Comparison Table\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSteel\u003c\/th\u003e\n\u003cth\u003eTypical HRC\u003c\/th\u003e\n\u003cth\u003eEdge Retention\u003c\/th\u003e\n\u003cth\u003eCorrosion Resistance\u003c\/th\u003e\n\u003cth\u003eToughness\u003c\/th\u003e\n\u003cth\u003eSharpening Ease\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eBohler M390\u003c\/strong\u003e (this knife)\u003c\/td\u003e\n\u003ctd\u003e60-62\u003c\/td\u003e\n\u003ctd\u003eExceptional\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003ctd\u003eDifficult (diamond)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCPM-20CV\u003c\/td\u003e\n\u003ctd\u003e59-61\u003c\/td\u003e\n\u003ctd\u003eExceptional\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003ctd\u003eDifficult\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCPM-S35VN\u003c\/td\u003e\n\u003ctd\u003e58-60\u003c\/td\u003e\n\u003ctd\u003eVery Good\u003c\/td\u003e\n\u003ctd\u003eVery Good\u003c\/td\u003e\n\u003ctd\u003eBetter\u003c\/td\u003e\n\u003ctd\u003eModerate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e14C28N\u003c\/td\u003e\n\u003ctd\u003e59-61\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003ctd\u003eVery Easy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eD2\u003c\/td\u003e\n\u003ctd\u003e58-61\u003c\/td\u003e\n\u003ctd\u003eVery Good\u003c\/td\u003e\n\u003ctd\u003eFair (oil it)\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003ctd\u003eModerate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eGlossary of Key Terms\u003c\/h2\u003e\u003cstrong\u003eBohler M390\u003c\/strong\u003e\u003cbr\u003eA third-generation powder-metallurgy stainless from Bohler loaded with chromium, vanadium and molybdenum carbides. At 60-62 HRC it holds a working edge longer than almost any other production knife steel and still resists corrosion like a true stainless.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eCrossbar Lock\u003c\/strong\u003e\u003cbr\u003eA spring-loaded steel bar that spans the handle and wedges behind the blade tang. It is fully ambidextrous, keeps your fingers out of the blade path on closing and is among the strongest folder locks in production.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003e6AL4V Titanium\u003c\/strong\u003e\u003cbr\u003eThe Ti-6Al-4V aerospace alloy used for GEO's scales, clip, pivot cap and screws. It is roughly 45 percent lighter than steel, completely corrosion-proof and takes a hard, wear-resistant anodized surface.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eBronze Washers\u003c\/strong\u003e\u003cbr\u003ePhosphor-bronze pivot washers that give a smooth, controlled opening and shrug off pocket grit far better than bare titanium-on-steel contact.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eDrop Point\u003c\/strong\u003e\u003cbr\u003eA convex spine that sweeps down toward a strong, controllable point - the default all-round blade profile for hard-use EDC.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eFlat Grind\u003c\/strong\u003e\u003cbr\u003eBlade flats that taper in a straight line from the spine to the edge. It slices better than a hollow grind and stays much tougher behind the apex.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eVacuum and Cryogenic Heat Treatment\u003c\/strong\u003e\u003cbr\u003eA two-stage quench: vacuum hardening prevents decarburization and scale, then a deep cryogenic cycle converts retained austenite so the steel reaches its full hardness and dimensional stability.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eHRC\u003c\/strong\u003e\u003cbr\u003eRockwell Hardness C scale: the industry standard for reporting blade hardness. Higher numbers mean a harder, more wear-resistant edge that is also less forgiving of lateral load.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eStonewash Finish\u003c\/strong\u003e\u003cbr\u003eA tumbling process that bead-blasts the steel into a uniform matte grey. It hides carry scratches and kills glare far better than a satin finish.\u003cbr\u003e\u003cbr\u003e\u003ch2\u003eGEO Knife Belluf GEO2508D - Who Should Buy \/ Who Should Skip\u003c\/h2\u003e\u003ch3\u003eWho Should Buy\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eYou carry a knife every day and want edge retention measured in weeks, not days.\u003c\/li\u003e\n\u003cli\u003eYou want one ambidextrous folder both left- and right-handed users can run safely.\u003c\/li\u003e\n\u003cli\u003eYou collect M390 Orange G10 builds and want the whole GEO Knife line covered.\u003c\/li\u003e\n\u003cli\u003eYou need a lightweight EDC that still punches above its weight in hard cutting tasks.\u003c\/li\u003e\n\u003cli\u003eYou value titanium hardware, bronze washers and cryogenic heat treat as long-term reliability cues.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWho Should Skip\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eYou pry with your knife - M390 chips laterally; a tougher 3V or Nitro-V blade is the better beater.\u003c\/li\u003e\n\u003cli\u003eYou sharpen on budget oil stones only - 60-62 HRC steel needs diamond abrasives.\u003c\/li\u003e\n\u003cli\u003ePrefer heavy over-built knives - at 73.1 g this folder prioritizes light carry.\u003c\/li\u003e\n\u003cli\u003eYou need a knife for saltwater daily use - rinse discipline is still required despite stainless steel.\u003c\/li\u003e\n\u003cli\u003eYour local law caps blades below this model's length - check the specs before ordering.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eGEO Knife Belluf GEO2508D - Care \u0026amp; Maintenance\u003c\/h2\u003e\u003col\u003e\n\u003cli\u003eWipe the blade dry after every use - M390 is stainless, not stain-proof, and pocket humidity will still speckle it.\u003c\/li\u003e\n\u003cli\u003eOne drop of quality knife oil at the pivot and crossbar contact points monthly, then cycle the action to spread it.\u003c\/li\u003e\n\u003cli\u003eBlow pocket lint out of the handle channel with compressed air before oiling so grit never grinds inside the pivot.\u003c\/li\u003e\n\u003cli\u003eSharpen on diamond or CBN plates; at 60-62 HRC conventional aluminium-oxide stones barely cut this steel.\u003c\/li\u003e\n\u003cli\u003eUse light, consistent strokes and finish on a fine ceramic or leather strop - heavy pressure chips a hard apex.\u003c\/li\u003e\n\u003cli\u003eRinse with warm water and mild dish soap when it gets grimy, then dry thoroughly before it goes back in the pocket.\u003c\/li\u003e\n\u003cli\u003eNever pry, twist or use the tip as a screwdriver; hard steel trades impact toughness for wear resistance.\u003c\/li\u003e\n\u003cli\u003eKeep the crossbar track clean; a lint-packed omega spring channel is the number one cause of a sluggish action.\u003c\/li\u003e\n\u003cli\u003eRe-torque clip and body screws with the correct Torx driver - titanium hardware gall if you overtighten it.\u003c\/li\u003e\n\u003c\/ol\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"GEO Knife Belluf GEO2508D\",\"sku\":\"GEO2508D\",\"mpn\":\"GEO2508D\",\"productID\":\"GEO2508D\",\"brand\":{\"@type\":\"Brand\",\"name\":\"GEO Knife\"},\"manufacturer\":\"GEO Knife\",\"material\":\"Bohler M390 blade, G10\",\"color\":\"G10\",\"category\":\"Knives \u003e Folding Knives \u003e EDC\",\"description\":\"The GEO Knife Belluf GEO2508D is a compact 145 mm gentleman's folder by Fabian Hobbelen, built around a wide Bohler \u003ca href=\\\"\/collections\/m390\\\"\u003eM390\u003c\/a\u003e drop-point blade, Orange G10 scales and a smooth \u003ca href=\\\"\/collections\/crossbar-lock-knives\\\"\u003ecrossbar lock\u003c\/a\u003e action. See every \u003ca href=\",\"additionalProperty\":[{\"@type\":\"PropertyValue\",\"name\":\"Model\",\"value\":\"GEO2508D\"},{\"@type\":\"PropertyValue\",\"name\":\"Product Type\",\"value\":\"Folding Knife\"},{\"@type\":\"PropertyValue\",\"name\":\"Brand\",\"value\":\"GEO Knife\"},{\"@type\":\"PropertyValue\",\"name\":\"Model Line\",\"value\":\"Belluf\"},{\"@type\":\"PropertyValue\",\"name\":\"Overall Length\",\"value\":\"5.7 inch \/ 145 mm\"},{\"@type\":\"PropertyValue\",\"name\":\"Blade Length\",\"value\":\"2.4 inch \/ 60 mm\"},{\"@type\":\"PropertyValue\",\"name\":\"Handle Length\",\"value\":\"3.3 inch \/ 85 mm\"},{\"@type\":\"PropertyValue\",\"name\":\"Handle Thickness\",\"value\":\"0.4 inch \/ 10 mm\"},{\"@type\":\"PropertyValue\",\"name\":\"Blade Width\",\"value\":\"1.1 inch \/ 28 mm\"},{\"@type\":\"PropertyValue\",\"name\":\"Blade Thickness\",\"value\":\"0.1 inch \/ 3.1 mm\"},{\"@type\":\"PropertyValue\",\"name\":\"Blade Material\",\"value\":\"Bohler M390\"},{\"@type\":\"PropertyValue\",\"name\":\"Blade Hardness\",\"value\":\"HRC 60-62\"},{\"@type\":\"PropertyValue\",\"name\":\"Blade Type\",\"value\":\"Drop Point\"},{\"@type\":\"PropertyValue\",\"name\":\"Blade Finish\",\"value\":\"Stonewash\"},{\"@type\":\"PropertyValue\",\"name\":\"Blade Grind\",\"value\":\"Flat\"},{\"@type\":\"PropertyValue\",\"name\":\"Heat Treatment\",\"value\":\"Vacuum \u0026 Cryogenic\"},{\"@type\":\"PropertyValue\",\"name\":\"Handle Material\",\"value\":\"G10\"},{\"@type\":\"PropertyValue\",\"name\":\"Lock Type\",\"value\":\"Crossbar\"},{\"@type\":\"PropertyValue\",\"name\":\"Dexterity\",\"value\":\"Ambidextrous\"},{\"@type\":\"PropertyValue\",\"name\":\"Washers\",\"value\":\"Bronze Washers\"},{\"@type\":\"PropertyValue\",\"name\":\"Pocket Clip\",\"value\":\"6AL4V Titanium, Tip-up Right\"},{\"@type\":\"PropertyValue\",\"name\":\"Item Weight\",\"value\":\"2.58 oz \/ 73.1 g\"},{\"@type\":\"PropertyValue\",\"name\":\"Designer\",\"value\":\"Fabian Hobbelen\"},{\"@type\":\"PropertyValue\",\"name\":\"Country of Origin\",\"value\":\"China\"}],\"offers\":{\"@type\":\"Offer\",\"price\":\"87.20\",\"priceCurrency\":\"USD\",\"availability\":\"https:\/\/schema.org\/InStock\",\"itemCondition\":\"https:\/\/schema.org\/NewCondition\"},\"weight\":{\"@type\":\"QuantitativeValue\",\"value\":73.1,\"unitCode\":\"GRM\",\"name\":\"73.1 g (2.58 oz)\"}}\u003c\/script\u003e","brand":"GEO Knife","offers":[{"title":"Default Title","offer_id":50534040568005,"sku":"GEO2508D","price":87.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0584\/0699\/4117\/files\/01_e29287e1-c8b3-4902-86af-cabe6ef65c75.jpg?v=1790246723"},{"product_id":"geo-knife-belluf-geo2508h","title":"GEO Knife Belluf GEO2508H M390 Blade Titanium Handle Crossbar Lock Folding Knife","description":"\u003cp\u003eThe GEO Knife Belluf GEO2508H combines exceptional craftsmanship with cutting-edge materials. Featuring a premium Bohler M390 stainless steel blade—renowned for superior edge retention and corrosion resistance—this folding knife delivers professional-grade performance. The 6AL4V titanium handle provides lightweight durability with an ambidextrous crossbar lock for secure operation. With a 2.4-inch drop point blade and stonewash finish, it excels for outdoor adventures and daily carry. Precision-engineered with vacuum and cryogenic heat treatment, achieving HRC60-62 hardness, this knife balances utility with elegant design, making it an ideal choice for EDC enthusiasts and outdoor professionals.\u003c\/p\u003e\n\u003ch2 class=\"product-title\"\u003e\u003cstrong\u003eM390 Blade Introduction\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/edcmall.cn\/collections\/m390\"\u003eM390\u003c\/a\u003e is an advanced powder-metallurgical stainless steel utilizing high chromium and vanadium content to deliver exceptional wear resistance and industry-leading corrosion resilience. It excels at retaining a razor-sharp edge under prolonged use; however, this extreme hardness renders the blade notably difficult to sharpen or reprofile without diamond abrasives. Additionally, its fine microstructure, while offering superior edge stability, sacrifices some structural toughness and may be more prone to chipping under heavy lateral stress.\u003c\/p\u003e\n\u003ch2 class=\"MsoNormal\"\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\n\u003c\/h2\u003e\n\u003cp\u003eModel: GEO2508H\u003cbr\u003eProduct Type: Folding Knife\u003cbr\u003eBrand: GEO\u003cbr\u003eOverall Length: 5.7 inch \/ 145mm\u003cbr\u003eBlade Length: 2.4 inch \/ 60mm\u003cbr\u003e\u003cbr\u003eHandle Length:  3.3 inch \/ 85mm\u003cbr\u003eHandle Thickness: 0.4 inch \/ 10mm\u003cbr\u003eBlade Width: 1.1 inch \/ 28 mm\u003cbr\u003eBlade Thickness: 0.1 inch \/ 3.1mm\u003cbr\u003eBlade Material: Bohler M390\u003cbr\u003e\u003cbr\u003eHeat Treatment: Vacuum \u0026amp; Cryogenic\u003cbr\u003eBlade Hardness: HRC60-62\u003cbr\u003eBlade Type: Drop Point\u003cbr\u003eBlade Finish: Stonewash\u003cbr\u003eBlade Grind: Flat\u003cbr\u003e\u003cbr\u003eHandle Material: 6AL4V Titanium\u003cbr\u003eLock Type: Crossbar\u003cbr\u003eDexterity: Ambidextrous\u003cbr\u003eWashers Material: \u003cspan\u003eBronze Washers\u003c\/span\u003e\u003cbr\u003eBack Spacer: N\/A\u003cbr\u003e\u003cbr\u003eClip Material: 6AL4V Titanium\u003cbr\u003eClip Position: Tip-up, Right\u003cbr\u003ePivot Cap: 6AL4V Titanium \u003cbr\u003ePivot Collar : Titanium\u003cbr\u003eScrews Material: 6AL4V Titanium\u003cbr\u003e\u003cbr\u003eItem Weight: 3.01 oz \/ 85.3g\u003cbr\u003eDesigner: Fabian Hobbelen\u003cbr\u003eCountry of Origin: China\u003c\/p\u003e\n\u003ch2\u003eGEO Knife Belluf GEO2508H - Product Overview\u003c\/h2\u003e\u003cp\u003eThe GEO Knife Belluf GEO2508H is a compact 145 mm gentleman's folder by Fabian Hobbelen, built around a wide Bohler \u003ca href=\"\/es\/collections\/m390\"\u003eM390\u003c\/a\u003e drop-point blade, Bead-textured 6AL4V titanium scales and a smooth \u003ca href=\"\/es\/collections\/crossbar-lock-knives\"\u003ecrossbar lock\u003c\/a\u003e action. See every \u003ca href=\"\/es\/collections\/geo-knife\"\u003eGEO Knife\u003c\/a\u003e release and the rest of our \u003ca href=\"\/es\/collections\/folding-knives\"\u003efolding knives\u003c\/a\u003e at EDCMALL.\u003c\/p\u003e\u003ch2\u003eGEO Knife Belluf GEO2508H - Bohler M390 - Super Steel Built to Outcut the Field\u003c\/h2\u003e\u003cp\u003eBohler M390 is the reason this knife holds its edge weeks longer than a mid-steel folder. The third-generation powder-metallurgy stainless from Austria carries a dense carbide population that resists abrasive wear at 60-62 HRC, yet its 20 percent chromium matrix still cleans up like a true stainless after food prep or rain. GEO hardens every blade under vacuum and cryogenic treatment, then finishes each one to stonewashed. The trade-offs are honest: M390 wants diamond abrasives when it finally does need sharpening, and it chips rather than bends under prying - treat it like the precision instrument it is and it will outlast several lesser knives. Combined with titanium, bronze washers and a 6AL4V titanium clip, the GEO2508H is built as a buy-once-carry-for-years working tool.\u003c\/p\u003e\u003ch2\u003eGEO Knife Belluf GEO2508H - Core Selling Points\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBohler M390 blade at 60-62 HRC - exceptional edge retention with genuine stainless corrosion resistance.\u003c\/li\u003e\n\u003cli\u003eAmbidextrous crossbar lock - spring-bar lock is fully ambidextrous and keeps fingers clear of the blade path.\u003c\/li\u003e\n\u003cli\u003eBead-textured 6AL4V titanium scales contoured to a 85 mm handle that grips far larger than its footprint.\u003c\/li\u003e\n\u003cli\u003eBronze washers at the pivot deliver a smooth, detented opening that will not go gritty with pocket lint.\u003c\/li\u003e\n\u003cli\u003e6AL4V titanium pocket clip, tip-up right carry, rides deep and low in the pocket.\u003c\/li\u003e\n\u003cli\u003eFlat-ground 60 mm drop point handles cardboard, food prep and rope without wedging.\u003c\/li\u003e\n\u003cli\u003e85.3 g on the scale - a shorts-pocket or dress-pants folder that never prints.\u003c\/li\u003e\n\u003cli\u003eVacuum and cryogenic heat treatment for full hardness conversion and long-term dimensional stability.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eGEO Knife Belluf GEO2508H - Where It Earns Its Pocket Time\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDaily pocket carry\u003c\/strong\u003e - at 85.3 g and 145 mm closed-friendly footprint it rides unnoticed until needed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarehouse and cardboard duty\u003c\/strong\u003e - M390 edge retention shrugs weeks of box cutting between touch-ups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCamp kitchen and food prep\u003c\/strong\u003e - stainless steel cleans up after acidic food without staining.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeekend trail and EDC errands\u003c\/strong\u003e - the crossbar lock opens and closes with either hand in any weather.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesk and dress carry\u003c\/strong\u003e - the 145 mm closed frame and deep-carry clip vanish under a shirt hem.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cdl\u003e\n\u003cdt\u003e\u003cstrong\u003eIs Bohler M390 worth it over cheaper steels?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eYes, if you cut daily and hate sharpening. M390 holds a working edge roughly three times longer than 8Cr13MoV-class steels and still resists rust; the cost is slower sharpening on diamond plates.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eHow does a crossbar lock work?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eA spring-loaded bar spans the handle and wedges behind the blade tang when it opens. Pull the bar back with your index or middle finger and the blade folds shut - fully ambidextrous, no liner to flex.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eIs the GEO2508H legal to carry?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eFolding knives with a manual crossbar lock are legal to carry in most jurisdictions, but blade-length rules vary - check your local law before carrying.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eDoes the titanium handle scratch?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eAnodized titanium develops honest carry marks over time; the oxide layer beneath stays corrosion-proof. Stonewashed and dark finishes hide wear best.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat sharpening setup works for M390?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eDiamond or CBN stones from 320 to 1000 grit, then a 3000-grit ceramic or leather strop. Conventional aluminium-oxide stones barely cut 60-62 HRC steel.\u003c\/dd\u003e\n\u003c\/dl\u003e\u003ch2\u003eGEO Knife Belluf GEO2508H - Steel Comparison Table\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSteel\u003c\/th\u003e\n\u003cth\u003eTypical HRC\u003c\/th\u003e\n\u003cth\u003eEdge Retention\u003c\/th\u003e\n\u003cth\u003eCorrosion Resistance\u003c\/th\u003e\n\u003cth\u003eToughness\u003c\/th\u003e\n\u003cth\u003eSharpening Ease\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eBohler M390\u003c\/strong\u003e (this knife)\u003c\/td\u003e\n\u003ctd\u003e60-62\u003c\/td\u003e\n\u003ctd\u003eExceptional\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003ctd\u003eDifficult (diamond)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCPM-20CV\u003c\/td\u003e\n\u003ctd\u003e59-61\u003c\/td\u003e\n\u003ctd\u003eExceptional\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003ctd\u003eDifficult\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCPM-S35VN\u003c\/td\u003e\n\u003ctd\u003e58-60\u003c\/td\u003e\n\u003ctd\u003eVery Good\u003c\/td\u003e\n\u003ctd\u003eVery Good\u003c\/td\u003e\n\u003ctd\u003eBetter\u003c\/td\u003e\n\u003ctd\u003eModerate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e14C28N\u003c\/td\u003e\n\u003ctd\u003e59-61\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003ctd\u003eVery Easy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eD2\u003c\/td\u003e\n\u003ctd\u003e58-61\u003c\/td\u003e\n\u003ctd\u003eVery Good\u003c\/td\u003e\n\u003ctd\u003eFair (oil it)\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003ctd\u003eModerate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eGlossary of Key Terms\u003c\/h2\u003e\u003cstrong\u003eBohler M390\u003c\/strong\u003e\u003cbr\u003eA third-generation powder-metallurgy stainless from Bohler loaded with chromium, vanadium and molybdenum carbides. At 60-62 HRC it holds a working edge longer than almost any other production knife steel and still resists corrosion like a true stainless.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eCrossbar Lock\u003c\/strong\u003e\u003cbr\u003eA spring-loaded steel bar that spans the handle and wedges behind the blade tang. It is fully ambidextrous, keeps your fingers out of the blade path on closing and is among the strongest folder locks in production.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003e6AL4V Titanium\u003c\/strong\u003e\u003cbr\u003eThe Ti-6Al-4V aerospace alloy used for GEO's scales, clip, pivot cap and screws. It is roughly 45 percent lighter than steel, completely corrosion-proof and takes a hard, wear-resistant anodized surface.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eBronze Washers\u003c\/strong\u003e\u003cbr\u003ePhosphor-bronze pivot washers that give a smooth, controlled opening and shrug off pocket grit far better than bare titanium-on-steel contact.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eDrop Point\u003c\/strong\u003e\u003cbr\u003eA convex spine that sweeps down toward a strong, controllable point - the default all-round blade profile for hard-use EDC.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eFlat Grind\u003c\/strong\u003e\u003cbr\u003eBlade flats that taper in a straight line from the spine to the edge. It slices better than a hollow grind and stays much tougher behind the apex.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eVacuum and Cryogenic Heat Treatment\u003c\/strong\u003e\u003cbr\u003eA two-stage quench: vacuum hardening prevents decarburization and scale, then a deep cryogenic cycle converts retained austenite so the steel reaches its full hardness and dimensional stability.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eHRC\u003c\/strong\u003e\u003cbr\u003eRockwell Hardness C scale: the industry standard for reporting blade hardness. Higher numbers mean a harder, more wear-resistant edge that is also less forgiving of lateral load.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eStonewash Finish\u003c\/strong\u003e\u003cbr\u003eA tumbling process that bead-blasts the steel into a uniform matte grey. It hides carry scratches and kills glare far better than a satin finish.\u003cbr\u003e\u003cbr\u003e\u003ch2\u003eGEO Knife Belluf GEO2508H - Who Should Buy \/ Who Should Skip\u003c\/h2\u003e\u003ch3\u003eWho Should Buy\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eYou carry a knife every day and want edge retention measured in weeks, not days.\u003c\/li\u003e\n\u003cli\u003eYou want one ambidextrous folder both left- and right-handed users can run safely.\u003c\/li\u003e\n\u003cli\u003eYou collect M390 Titanium builds and want the whole GEO Knife line covered.\u003c\/li\u003e\n\u003cli\u003eYou need a lightweight EDC that still punches above its weight in hard cutting tasks.\u003c\/li\u003e\n\u003cli\u003eYou value titanium hardware, bronze washers and cryogenic heat treat as long-term reliability cues.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWho Should Skip\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eYou pry with your knife - M390 chips laterally; a tougher 3V or Nitro-V blade is the better beater.\u003c\/li\u003e\n\u003cli\u003eYou sharpen on budget oil stones only - 60-62 HRC steel needs diamond abrasives.\u003c\/li\u003e\n\u003cli\u003ePrefer heavy over-built knives - at 85.3 g this folder prioritizes light carry.\u003c\/li\u003e\n\u003cli\u003eYou need a knife for saltwater daily use - rinse discipline is still required despite stainless steel.\u003c\/li\u003e\n\u003cli\u003eYour local law caps blades below this model's length - check the specs before ordering.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eGEO Knife Belluf GEO2508H - Care \u0026amp; Maintenance\u003c\/h2\u003e\u003col\u003e\n\u003cli\u003eWipe the titanium scales with a dry microfiber cloth; anodized colour is a surface oxide layer that scuffs under grit.\u003c\/li\u003e\n\u003cli\u003eOne drop of quality knife oil at the pivot and crossbar contact points monthly, then cycle the action to spread it.\u003c\/li\u003e\n\u003cli\u003eBlow pocket lint out of the handle channel with compressed air before oiling so grit never grinds inside the pivot.\u003c\/li\u003e\n\u003cli\u003eSharpen on diamond or CBN plates; at 60-62 HRC conventional stones barely cut Bohler M390.\u003c\/li\u003e\n\u003cli\u003eUse light, consistent strokes and finish on leather - heavy pressure chips a hard, thin apex.\u003c\/li\u003e\n\u003cli\u003eClean the titanium with warm water and mild soap only; solvents and bleach discolour anodizing.\u003c\/li\u003e\n\u003cli\u003eNever pry, twist or lateral-load the tip; a 3.1 mm blade at 62 HRC chips before it bends.\u003c\/li\u003e\n\u003cli\u003eKeep the crossbar track clean; a lint-packed omega spring channel causes sluggish, gritty deployment.\u003c\/li\u003e\n\u003cli\u003eRe-torque clip and body screws with the correct Torx driver - titanium fasteners gall if you overtighten them.\u003c\/li\u003e\n\u003c\/ol\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"GEO Knife Belluf GEO2508H\",\"sku\":\"GEO2508H\",\"mpn\":\"GEO2508H\",\"productID\":\"GEO2508H\",\"brand\":{\"@type\":\"Brand\",\"name\":\"GEO Knife\"},\"manufacturer\":\"GEO Knife\",\"material\":\"Bohler M390 blade, titanium\",\"color\":\"titanium\",\"category\":\"Knives \u003e Folding Knives \u003e EDC\",\"description\":\"The GEO Knife Belluf GEO2508H is a compact 145 mm gentleman's folder by Fabian Hobbelen, built around a wide Bohler \u003ca href=\\\"\/collections\/m390\\\"\u003eM390\u003c\/a\u003e drop-point blade, Bead-textured 6AL4V titanium scales and a smooth \u003ca href=\\\"\/collections\/crossbar-lock-knives\\\"\u003ecrossbar lock\u003c\/a\u003e action. \",\"additionalProperty\":[{\"@type\":\"PropertyValue\",\"name\":\"Model\",\"value\":\"GEO2508H\"},{\"@type\":\"PropertyValue\",\"name\":\"Product Type\",\"value\":\"Folding Knife\"},{\"@type\":\"PropertyValue\",\"name\":\"Brand\",\"value\":\"GEO Knife\"},{\"@type\":\"PropertyValue\",\"name\":\"Model Line\",\"value\":\"Belluf\"},{\"@type\":\"PropertyValue\",\"name\":\"Overall Length\",\"value\":\"5.7 inch \/ 145 mm\"},{\"@type\":\"PropertyValue\",\"name\":\"Blade Length\",\"value\":\"2.4 inch \/ 60 mm\"},{\"@type\":\"PropertyValue\",\"name\":\"Handle Length\",\"value\":\"3.3 inch \/ 85 mm\"},{\"@type\":\"PropertyValue\",\"name\":\"Handle Thickness\",\"value\":\"0.4 inch \/ 10 mm\"},{\"@type\":\"PropertyValue\",\"name\":\"Blade Width\",\"value\":\"1.1 inch \/ 28 mm\"},{\"@type\":\"PropertyValue\",\"name\":\"Blade Thickness\",\"value\":\"0.1 inch \/ 3.1 mm\"},{\"@type\":\"PropertyValue\",\"name\":\"Blade Material\",\"value\":\"Bohler M390\"},{\"@type\":\"PropertyValue\",\"name\":\"Blade Hardness\",\"value\":\"HRC 60-62\"},{\"@type\":\"PropertyValue\",\"name\":\"Blade Type\",\"value\":\"Drop Point\"},{\"@type\":\"PropertyValue\",\"name\":\"Blade Finish\",\"value\":\"Stonewash\"},{\"@type\":\"PropertyValue\",\"name\":\"Blade Grind\",\"value\":\"Flat\"},{\"@type\":\"PropertyValue\",\"name\":\"Heat Treatment\",\"value\":\"Vacuum \u0026 Cryogenic\"},{\"@type\":\"PropertyValue\",\"name\":\"Handle Material\",\"value\":\"6AL4V Titanium\"},{\"@type\":\"PropertyValue\",\"name\":\"Lock Type\",\"value\":\"Crossbar\"},{\"@type\":\"PropertyValue\",\"name\":\"Dexterity\",\"value\":\"Ambidextrous\"},{\"@type\":\"PropertyValue\",\"name\":\"Washers\",\"value\":\"Bronze Washers\"},{\"@type\":\"PropertyValue\",\"name\":\"Pocket Clip\",\"value\":\"6AL4V Titanium, Tip-up Right\"},{\"@type\":\"PropertyValue\",\"name\":\"Item Weight\",\"value\":\"3.01 oz \/ 85.3 g\"},{\"@type\":\"PropertyValue\",\"name\":\"Designer\",\"value\":\"Fabian Hobbelen\"},{\"@type\":\"PropertyValue\",\"name\":\"Country of Origin\",\"value\":\"China\"}],\"offers\":{\"@type\":\"Offer\",\"price\":\"159.20\",\"priceCurrency\":\"USD\",\"availability\":\"https:\/\/schema.org\/InStock\",\"itemCondition\":\"https:\/\/schema.org\/NewCondition\"},\"weight\":{\"@type\":\"QuantitativeValue\",\"value\":85.3,\"unitCode\":\"GRM\",\"name\":\"85.3 g (3.01 oz)\"}}\u003c\/script\u003e","brand":"GEO Knife","offers":[{"title":"Default Title","offer_id":50534067667141,"sku":"GEO2508H","price":159.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0584\/0699\/4117\/files\/01_bb800041-6f1c-4b1a-b6f4-9e2c9a89345a.jpg?v=1790246872"},{"product_id":"geo-knife-belluf-geo2508i","title":"GEO Knife Belluf GEO2508I M390 Blade Titanium Handle Crossbar Lock Folding Knife","description":"\u003cp\u003eThe GEO Knife GEO2508I combines exceptional craftsmanship with premium materials for serious EDC enthusiasts. Featuring a Böhler M390 stainless steel blade—renowned for extraordinary edge retention and corrosion resistance—this folding knife delivers uncompromising performance. The 6AL4V titanium handle with crossbar lock ensures durability and ambidextrous operation, while ergonomic design guarantees a secure grip in any condition. At just 85.3g, this lightweight utility blade excels in outdoor, camping, and daily carry applications. The stonewash drop-point blade (HRC60-62) maintains a razor-sharp edge through extended use, though sharpening requires diamond abrasives due to its extreme hardness. Designed by Fabian Hobbelen, this precision instrument represents the pinnacle of folding knife engineering.\u003c\/p\u003e\n\u003ch2 class=\"product-title\"\u003e\u003cstrong\u003eM390 Blade Introduction\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/edcmall.cn\/collections\/m390\"\u003eM390\u003c\/a\u003e is an advanced powder-metallurgical stainless steel utilizing high chromium and vanadium content to deliver exceptional wear resistance and industry-leading corrosion resilience. It excels at retaining a razor-sharp edge under prolonged use; however, this extreme hardness renders the blade notably difficult to sharpen or reprofile without diamond abrasives. Additionally, its fine microstructure, while offering superior edge stability, sacrifices some structural toughness and may be more prone to chipping under heavy lateral stress.\u003c\/p\u003e\n\u003ch2 class=\"MsoNormal\"\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\n\u003c\/h2\u003e\n\u003cp\u003eModel: GEO2508I\u003cbr\u003eProduct Type: Folding Knife\u003cbr\u003eBrand: GEO\u003cbr\u003eOverall Length: 5.7 inch \/ 145mm\u003cbr\u003eBlade Length: 2.4 inch \/ 60mm\u003cbr\u003e\u003cbr\u003eHandle Length:  3.3 inch \/ 85mm\u003cbr\u003eHandle Thickness: 0.4 inch \/ 10mm\u003cbr\u003eBlade Width: 1.1 inch \/ 28 mm\u003cbr\u003eBlade Thickness: 0.1 inch \/ 3.1mm\u003cbr\u003eBlade Material: Bohler M390\u003cbr\u003e\u003cbr\u003eHeat Treatment: Vacuum \u0026amp; Cryogenic\u003cbr\u003eBlade Hardness: HRC60-62\u003cbr\u003eBlade Type: Drop Point\u003cbr\u003eBlade Finish: Stonewash\u003cbr\u003eBlade Grind: Flat\u003cbr\u003e\u003cbr\u003eHandle Material: 6AL4V Titanium\u003cbr\u003eLock Type: Crossbar\u003cbr\u003eDexterity: Ambidextrous\u003cbr\u003eWashers Material: \u003cspan\u003eBronze Washers\u003c\/span\u003e\u003cbr\u003eBack Spacer: N\/A\u003cbr\u003e\u003cbr\u003eClip Material: 6AL4V Titanium\u003cbr\u003eClip Position: Tip-up, Right\u003cbr\u003ePivot Cap: 6AL4V Titanium \u003cbr\u003ePivot Collar : Titanium\u003cbr\u003eScrews Material: 6AL4V Titanium\u003cbr\u003e\u003cbr\u003eItem Weight: 3.01 oz \/ 85.3g\u003cbr\u003eDesigner: Fabian Hobbelen\u003cbr\u003eCountry of Origin: China\u003c\/p\u003e\n\u003ch2\u003eGEO Knife Belluf GEO2508I - Product Overview\u003c\/h2\u003e\u003cp\u003eThe GEO Knife Belluf GEO2508I is a compact 145 mm gentleman's folder by Fabian Hobbelen, built around a wide Bohler \u003ca href=\"\/es\/collections\/m390\"\u003eM390\u003c\/a\u003e drop-point blade, Olive anodized 6AL4V titanium scales and a smooth \u003ca href=\"\/es\/collections\/crossbar-lock-knives\"\u003ecrossbar lock\u003c\/a\u003e action. See every \u003ca href=\"\/es\/collections\/geo-knife\"\u003eGEO Knife\u003c\/a\u003e release and the rest of our \u003ca href=\"\/es\/collections\/folding-knives\"\u003efolding knives\u003c\/a\u003e at EDCMALL.\u003c\/p\u003e\u003ch2\u003eGEO Knife Belluf GEO2508I - Bohler M390 - Super Steel Built to Outcut the Field\u003c\/h2\u003e\u003cp\u003eBohler M390 is the reason this knife holds its edge weeks longer than a mid-steel folder. The third-generation powder-metallurgy stainless from Austria carries a dense carbide population that resists abrasive wear at 60-62 HRC, yet its 20 percent chromium matrix still cleans up like a true stainless after food prep or rain. GEO hardens every blade under vacuum and cryogenic treatment, then finishes each one to stonewashed. The trade-offs are honest: M390 wants diamond abrasives when it finally does need sharpening, and it chips rather than bends under prying - treat it like the precision instrument it is and it will outlast several lesser knives. Combined with titanium, bronze washers and a 6AL4V titanium clip, the GEO2508I is built as a buy-once-carry-for-years working tool.\u003c\/p\u003e\u003ch2\u003eGEO Knife Belluf GEO2508I - Core Selling Points\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBohler M390 blade at 60-62 HRC - exceptional edge retention with genuine stainless corrosion resistance.\u003c\/li\u003e\n\u003cli\u003eAmbidextrous crossbar lock - spring-bar lock is fully ambidextrous and keeps fingers clear of the blade path.\u003c\/li\u003e\n\u003cli\u003eOlive anodized 6AL4V titanium scales contoured to a 85 mm handle that grips far larger than its footprint.\u003c\/li\u003e\n\u003cli\u003eBronze washers at the pivot deliver a smooth, detented opening that will not go gritty with pocket lint.\u003c\/li\u003e\n\u003cli\u003e6AL4V titanium pocket clip, tip-up right carry, rides deep and low in the pocket.\u003c\/li\u003e\n\u003cli\u003eFlat-ground 60 mm drop point handles cardboard, food prep and rope without wedging.\u003c\/li\u003e\n\u003cli\u003e85.3 g on the scale - a shorts-pocket or dress-pants folder that never prints.\u003c\/li\u003e\n\u003cli\u003eVacuum and cryogenic heat treatment for full hardness conversion and long-term dimensional stability.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eGEO Knife Belluf GEO2508I - Where It Earns Its Pocket Time\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDaily pocket carry\u003c\/strong\u003e - at 85.3 g and 145 mm closed-friendly footprint it rides unnoticed until needed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarehouse and cardboard duty\u003c\/strong\u003e - M390 edge retention shrugs weeks of box cutting between touch-ups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCamp kitchen and food prep\u003c\/strong\u003e - stainless steel cleans up after acidic food without staining.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeekend trail and EDC errands\u003c\/strong\u003e - the crossbar lock opens and closes with either hand in any weather.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesk and dress carry\u003c\/strong\u003e - the 145 mm closed frame and deep-carry clip vanish under a shirt hem.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cdl\u003e\n\u003cdt\u003e\u003cstrong\u003eIs Bohler M390 worth it over cheaper steels?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eYes, if you cut daily and hate sharpening. M390 holds a working edge roughly three times longer than 8Cr13MoV-class steels and still resists rust; the cost is slower sharpening on diamond plates.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eHow does a crossbar lock work?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eA spring-loaded bar spans the handle and wedges behind the blade tang when it opens. Pull the bar back with your index or middle finger and the blade folds shut - fully ambidextrous, no liner to flex.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eIs the GEO2508I legal to carry?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eFolding knives with a manual crossbar lock are legal to carry in most jurisdictions, but blade-length rules vary - check your local law before carrying.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eDoes the titanium handle scratch?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eAnodized titanium develops honest carry marks over time; the oxide layer beneath stays corrosion-proof. Stonewashed and dark finishes hide wear best.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat sharpening setup works for M390?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eDiamond or CBN stones from 320 to 1000 grit, then a 3000-grit ceramic or leather strop. Conventional aluminium-oxide stones barely cut 60-62 HRC steel.\u003c\/dd\u003e\n\u003c\/dl\u003e\u003ch2\u003eGEO Knife Belluf GEO2508I - Steel Comparison Table\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSteel\u003c\/th\u003e\n\u003cth\u003eTypical HRC\u003c\/th\u003e\n\u003cth\u003eEdge Retention\u003c\/th\u003e\n\u003cth\u003eCorrosion Resistance\u003c\/th\u003e\n\u003cth\u003eToughness\u003c\/th\u003e\n\u003cth\u003eSharpening Ease\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eBohler M390\u003c\/strong\u003e (this knife)\u003c\/td\u003e\n\u003ctd\u003e60-62\u003c\/td\u003e\n\u003ctd\u003eExceptional\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003ctd\u003eDifficult (diamond)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCPM-20CV\u003c\/td\u003e\n\u003ctd\u003e59-61\u003c\/td\u003e\n\u003ctd\u003eExceptional\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003ctd\u003eDifficult\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCPM-S35VN\u003c\/td\u003e\n\u003ctd\u003e58-60\u003c\/td\u003e\n\u003ctd\u003eVery Good\u003c\/td\u003e\n\u003ctd\u003eVery Good\u003c\/td\u003e\n\u003ctd\u003eBetter\u003c\/td\u003e\n\u003ctd\u003eModerate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e14C28N\u003c\/td\u003e\n\u003ctd\u003e59-61\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003ctd\u003eVery Easy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eD2\u003c\/td\u003e\n\u003ctd\u003e58-61\u003c\/td\u003e\n\u003ctd\u003eVery Good\u003c\/td\u003e\n\u003ctd\u003eFair (oil it)\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003ctd\u003eModerate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eGlossary of Key Terms\u003c\/h2\u003e\u003cstrong\u003eBohler M390\u003c\/strong\u003e\u003cbr\u003eA third-generation powder-metallurgy stainless from Bohler loaded with chromium, vanadium and molybdenum carbides. At 60-62 HRC it holds a working edge longer than almost any other production knife steel and still resists corrosion like a true stainless.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eCrossbar Lock\u003c\/strong\u003e\u003cbr\u003eA spring-loaded steel bar that spans the handle and wedges behind the blade tang. It is fully ambidextrous, keeps your fingers out of the blade path on closing and is among the strongest folder locks in production.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003e6AL4V Titanium\u003c\/strong\u003e\u003cbr\u003eThe Ti-6Al-4V aerospace alloy used for GEO's scales, clip, pivot cap and screws. It is roughly 45 percent lighter than steel, completely corrosion-proof and takes a hard, wear-resistant anodized surface.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eBronze Washers\u003c\/strong\u003e\u003cbr\u003ePhosphor-bronze pivot washers that give a smooth, controlled opening and shrug off pocket grit far better than bare titanium-on-steel contact.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eDrop Point\u003c\/strong\u003e\u003cbr\u003eA convex spine that sweeps down toward a strong, controllable point - the default all-round blade profile for hard-use EDC.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eFlat Grind\u003c\/strong\u003e\u003cbr\u003eBlade flats that taper in a straight line from the spine to the edge. It slices better than a hollow grind and stays much tougher behind the apex.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eVacuum and Cryogenic Heat Treatment\u003c\/strong\u003e\u003cbr\u003eA two-stage quench: vacuum hardening prevents decarburization and scale, then a deep cryogenic cycle converts retained austenite so the steel reaches its full hardness and dimensional stability.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eHRC\u003c\/strong\u003e\u003cbr\u003eRockwell Hardness C scale: the industry standard for reporting blade hardness. Higher numbers mean a harder, more wear-resistant edge that is also less forgiving of lateral load.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eStonewash Finish\u003c\/strong\u003e\u003cbr\u003eA tumbling process that bead-blasts the steel into a uniform matte grey. It hides carry scratches and kills glare far better than a satin finish.\u003cbr\u003e\u003cbr\u003e\u003ch2\u003eGEO Knife Belluf GEO2508I - Who Should Buy \/ Who Should Skip\u003c\/h2\u003e\u003ch3\u003eWho Should Buy\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eYou carry a knife every day and want edge retention measured in weeks, not days.\u003c\/li\u003e\n\u003cli\u003eYou want one ambidextrous folder both left- and right-handed users can run safely.\u003c\/li\u003e\n\u003cli\u003eYou collect M390 Titanium builds and want the whole GEO Knife line covered.\u003c\/li\u003e\n\u003cli\u003eYou need a lightweight EDC that still punches above its weight in hard cutting tasks.\u003c\/li\u003e\n\u003cli\u003eYou value titanium hardware, bronze washers and cryogenic heat treat as long-term reliability cues.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWho Should Skip\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eYou pry with your knife - M390 chips laterally; a tougher 3V or Nitro-V blade is the better beater.\u003c\/li\u003e\n\u003cli\u003eYou sharpen on budget oil stones only - 60-62 HRC steel needs diamond abrasives.\u003c\/li\u003e\n\u003cli\u003ePrefer heavy over-built knives - at 85.3 g this folder prioritizes light carry.\u003c\/li\u003e\n\u003cli\u003eYou need a knife for saltwater daily use - rinse discipline is still required despite stainless steel.\u003c\/li\u003e\n\u003cli\u003eYour local law caps blades below this model's length - check the specs before ordering.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eGEO Knife Belluf GEO2508I - Care \u0026amp; Maintenance\u003c\/h2\u003e\u003col\u003e\n\u003cli\u003eWipe the titanium scales with a dry microfiber cloth; anodized colour is a surface oxide layer that scuffs under grit.\u003c\/li\u003e\n\u003cli\u003eOne drop of quality knife oil at the pivot and crossbar contact points monthly, then cycle the action to spread it.\u003c\/li\u003e\n\u003cli\u003eBlow pocket lint out of the handle channel with compressed air before oiling so grit never grinds inside the pivot.\u003c\/li\u003e\n\u003cli\u003eSharpen on diamond or CBN plates; at 60-62 HRC conventional stones barely cut Bohler M390.\u003c\/li\u003e\n\u003cli\u003eUse light, consistent strokes and finish on leather - heavy pressure chips a hard, thin apex.\u003c\/li\u003e\n\u003cli\u003eClean the titanium with warm water and mild soap only; solvents and bleach discolour anodizing.\u003c\/li\u003e\n\u003cli\u003eNever pry, twist or lateral-load the tip; a 3.1 mm blade at 62 HRC chips before it bends.\u003c\/li\u003e\n\u003cli\u003eKeep the crossbar track clean; a lint-packed omega spring channel causes sluggish, gritty deployment.\u003c\/li\u003e\n\u003cli\u003eRe-torque clip and body screws with the correct Torx driver - titanium fasteners gall if you overtighten them.\u003c\/li\u003e\n\u003c\/ol\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"GEO Knife Belluf GEO2508I\",\"sku\":\"GEO2508I\",\"mpn\":\"GEO2508I\",\"productID\":\"GEO2508I\",\"brand\":{\"@type\":\"Brand\",\"name\":\"GEO Knife\"},\"manufacturer\":\"GEO Knife\",\"material\":\"Bohler M390 blade, titanium\",\"color\":\"titanium\",\"category\":\"Knives \u003e Folding Knives \u003e EDC\",\"description\":\"The GEO Knife Belluf GEO2508I is a compact 145 mm gentleman's folder by Fabian Hobbelen, built around a wide Bohler \u003ca href=\\\"\/collections\/m390\\\"\u003eM390\u003c\/a\u003e drop-point blade, Olive anodized 6AL4V titanium scales and a smooth \u003ca href=\\\"\/collections\/crossbar-lock-knives\\\"\u003ecrossbar lock\u003c\/a\u003e action.\",\"additionalProperty\":[{\"@type\":\"PropertyValue\",\"name\":\"Model\",\"value\":\"GEO2508I\"},{\"@type\":\"PropertyValue\",\"name\":\"Product Type\",\"value\":\"Folding Knife\"},{\"@type\":\"PropertyValue\",\"name\":\"Brand\",\"value\":\"GEO Knife\"},{\"@type\":\"PropertyValue\",\"name\":\"Model Line\",\"value\":\"Belluf\"},{\"@type\":\"PropertyValue\",\"name\":\"Overall Length\",\"value\":\"5.7 inch \/ 145 mm\"},{\"@type\":\"PropertyValue\",\"name\":\"Blade Length\",\"value\":\"2.4 inch \/ 60 mm\"},{\"@type\":\"PropertyValue\",\"name\":\"Handle Length\",\"value\":\"3.3 inch \/ 85 mm\"},{\"@type\":\"PropertyValue\",\"name\":\"Handle Thickness\",\"value\":\"0.4 inch \/ 10 mm\"},{\"@type\":\"PropertyValue\",\"name\":\"Blade Width\",\"value\":\"1.1 inch \/ 28 mm\"},{\"@type\":\"PropertyValue\",\"name\":\"Blade Thickness\",\"value\":\"0.1 inch \/ 3.1 mm\"},{\"@type\":\"PropertyValue\",\"name\":\"Blade Material\",\"value\":\"Bohler M390\"},{\"@type\":\"PropertyValue\",\"name\":\"Blade Hardness\",\"value\":\"HRC 60-62\"},{\"@type\":\"PropertyValue\",\"name\":\"Blade Type\",\"value\":\"Drop Point\"},{\"@type\":\"PropertyValue\",\"name\":\"Blade Finish\",\"value\":\"Stonewash\"},{\"@type\":\"PropertyValue\",\"name\":\"Blade Grind\",\"value\":\"Flat\"},{\"@type\":\"PropertyValue\",\"name\":\"Heat Treatment\",\"value\":\"Vacuum \u0026 Cryogenic\"},{\"@type\":\"PropertyValue\",\"name\":\"Handle Material\",\"value\":\"6AL4V Titanium\"},{\"@type\":\"PropertyValue\",\"name\":\"Lock Type\",\"value\":\"Crossbar\"},{\"@type\":\"PropertyValue\",\"name\":\"Dexterity\",\"value\":\"Ambidextrous\"},{\"@type\":\"PropertyValue\",\"name\":\"Washers\",\"value\":\"Bronze Washers\"},{\"@type\":\"PropertyValue\",\"name\":\"Pocket Clip\",\"value\":\"6AL4V Titanium, Tip-up Right\"},{\"@type\":\"PropertyValue\",\"name\":\"Item Weight\",\"value\":\"3.01 oz \/ 85.3 g\"},{\"@type\":\"PropertyValue\",\"name\":\"Designer\",\"value\":\"Fabian Hobbelen\"},{\"@type\":\"PropertyValue\",\"name\":\"Country of Origin\",\"value\":\"China\"}],\"offers\":{\"@type\":\"Offer\",\"price\":\"159.20\",\"priceCurrency\":\"USD\",\"availability\":\"https:\/\/schema.org\/InStock\",\"itemCondition\":\"https:\/\/schema.org\/NewCondition\"},\"weight\":{\"@type\":\"QuantitativeValue\",\"value\":85.3,\"unitCode\":\"GRM\",\"name\":\"85.3 g (3.01 oz)\"}}\u003c\/script\u003e","brand":"GEO Knife","offers":[{"title":"Default Title","offer_id":50534111215813,"sku":"GEO2508I","price":159.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0584\/0699\/4117\/files\/01_abeed7fb-b121-446e-8257-b36c14c40c28.jpg?v=1790247021"},{"product_id":"geo-knife-belluf-geo2508j","title":"GEO Knife Belluf GEO2508J M390 Blade Titanium Handle Crossbar Lock Folding Knife","description":"\u003cp\u003eThe GEO Knife GEO2508J combines exceptional craftsmanship with cutting-edge performance. Featuring a premium Böhler M390 blade—a powder-metallurgical stainless steel renowned for razor-sharp edge retention and superior corrosion resistance—this folding knife delivers uncompromising durability. The 6AL4V titanium handle with crossbar lock ensures a secure, ergonomic grip for any situation. At just 3.01 oz, this ambidextrous EDC knife balances lightweight portability with robust functionality. Its stonewash drop-point blade, vacuum and cryogenic heat-treated to HRC60-62, excels in demanding outdoor environments. Designed by Fabian Hobbelen, the GEO2508J represents the pinnacle of tactical knife engineering—ideal for camping, hunting, and daily carry.\u003c\/p\u003e\n\u003ch2 class=\"product-title\"\u003e\u003cstrong\u003eM390 Blade Introduction\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/edcmall.cn\/collections\/m390\"\u003eM390\u003c\/a\u003e is an advanced powder-metallurgical stainless steel utilizing high chromium and vanadium content to deliver exceptional wear resistance and industry-leading corrosion resilience. It excels at retaining a razor-sharp edge under prolonged use; however, this extreme hardness renders the blade notably difficult to sharpen or reprofile without diamond abrasives. Additionally, its fine microstructure, while offering superior edge stability, sacrifices some structural toughness and may be more prone to chipping under heavy lateral stress.\u003c\/p\u003e\n\u003ch2 class=\"MsoNormal\"\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\n\u003c\/h2\u003e\n\u003cp\u003eModel: GEO2508J\u003cbr\u003eProduct Type: Folding Knife\u003cbr\u003eBrand: GEO\u003cbr\u003eOverall Length: 5.7 inch \/ 145mm\u003cbr\u003eBlade Length: 2.4 inch \/ 60mm\u003cbr\u003e\u003cbr\u003eHandle Length:  3.3 inch \/ 85mm\u003cbr\u003eHandle Thickness: 0.4 inch \/ 10mm\u003cbr\u003eBlade Width: 1.1 inch \/ 28 mm\u003cbr\u003eBlade Thickness: 0.1 inch \/ 3.1mm\u003cbr\u003eBlade Material: Bohler M390\u003cbr\u003e\u003cbr\u003eHeat Treatment: Vacuum \u0026amp; Cryogenic\u003cbr\u003eBlade Hardness: HRC60-62\u003cbr\u003eBlade Type: Drop Point\u003cbr\u003eBlade Finish: Stonewash\u003cbr\u003eBlade Grind: Flat\u003cbr\u003e\u003cbr\u003eHandle Material: 6AL4V Titanium\u003cbr\u003eLock Type: Crossbar\u003cbr\u003eDexterity: Ambidextrous\u003cbr\u003eWashers Material: \u003cspan\u003eBronze Washers\u003c\/span\u003e\u003cbr\u003eBack Spacer: N\/A\u003cbr\u003e\u003cbr\u003eClip Material: 6AL4V Titanium\u003cbr\u003eClip Position: Tip-up, Right\u003cbr\u003ePivot Cap: 6AL4V Titanium \u003cbr\u003ePivot Collar : Titanium\u003cbr\u003eScrews Material: 6AL4V Titanium\u003cbr\u003e\u003cbr\u003eItem Weight: 3.01 oz \/ 85.3g\u003cbr\u003eDesigner: Fabian Hobbelen\u003cbr\u003eCountry of Origin: China\u003c\/p\u003e\n\u003ch2\u003eGEO Knife Belluf GEO2508J - Product Overview\u003c\/h2\u003e\u003cp\u003eThe GEO Knife Belluf GEO2508J is a compact 145 mm gentleman's folder by Fabian Hobbelen, built around a wide Bohler \u003ca href=\"\/es\/collections\/m390\"\u003eM390\u003c\/a\u003e drop-point blade, Purple anodized 6AL4V titanium scales and a smooth \u003ca href=\"\/es\/collections\/crossbar-lock-knives\"\u003ecrossbar lock\u003c\/a\u003e action. See every \u003ca href=\"\/es\/collections\/geo-knife\"\u003eGEO Knife\u003c\/a\u003e release and the rest of our \u003ca href=\"\/es\/collections\/folding-knives\"\u003efolding knives\u003c\/a\u003e at EDCMALL.\u003c\/p\u003e\u003ch2\u003eGEO Knife Belluf GEO2508J - Bohler M390 - Super Steel Built to Outcut the Field\u003c\/h2\u003e\u003cp\u003eBohler M390 is the reason this knife holds its edge weeks longer than a mid-steel folder. The third-generation powder-metallurgy stainless from Austria carries a dense carbide population that resists abrasive wear at 60-62 HRC, yet its 20 percent chromium matrix still cleans up like a true stainless after food prep or rain. GEO hardens every blade under vacuum and cryogenic treatment, then finishes each one to stonewashed. The trade-offs are honest: M390 wants diamond abrasives when it finally does need sharpening, and it chips rather than bends under prying - treat it like the precision instrument it is and it will outlast several lesser knives. Combined with titanium, bronze washers and a 6AL4V titanium clip, the GEO2508J is built as a buy-once-carry-for-years working tool.\u003c\/p\u003e\u003ch2\u003eGEO Knife Belluf GEO2508J - Core Selling Points\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBohler M390 blade at 60-62 HRC - exceptional edge retention with genuine stainless corrosion resistance.\u003c\/li\u003e\n\u003cli\u003eAmbidextrous crossbar lock - spring-bar lock is fully ambidextrous and keeps fingers clear of the blade path.\u003c\/li\u003e\n\u003cli\u003ePurple anodized 6AL4V titanium scales contoured to a 85 mm handle that grips far larger than its footprint.\u003c\/li\u003e\n\u003cli\u003eBronze washers at the pivot deliver a smooth, detented opening that will not go gritty with pocket lint.\u003c\/li\u003e\n\u003cli\u003e6AL4V titanium pocket clip, tip-up right carry, rides deep and low in the pocket.\u003c\/li\u003e\n\u003cli\u003eFlat-ground 60 mm drop point handles cardboard, food prep and rope without wedging.\u003c\/li\u003e\n\u003cli\u003e85.3 g on the scale - a shorts-pocket or dress-pants folder that never prints.\u003c\/li\u003e\n\u003cli\u003eVacuum and cryogenic heat treatment for full hardness conversion and long-term dimensional stability.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eGEO Knife Belluf GEO2508J - Where It Earns Its Pocket Time\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDaily pocket carry\u003c\/strong\u003e - at 85.3 g and 145 mm closed-friendly footprint it rides unnoticed until needed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarehouse and cardboard duty\u003c\/strong\u003e - M390 edge retention shrugs weeks of box cutting between touch-ups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCamp kitchen and food prep\u003c\/strong\u003e - stainless steel cleans up after acidic food without staining.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeekend trail and EDC errands\u003c\/strong\u003e - the crossbar lock opens and closes with either hand in any weather.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesk and dress carry\u003c\/strong\u003e - the 145 mm closed frame and deep-carry clip vanish under a shirt hem.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cdl\u003e\n\u003cdt\u003e\u003cstrong\u003eIs Bohler M390 worth it over cheaper steels?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eYes, if you cut daily and hate sharpening. M390 holds a working edge roughly three times longer than 8Cr13MoV-class steels and still resists rust; the cost is slower sharpening on diamond plates.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eHow does a crossbar lock work?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eA spring-loaded bar spans the handle and wedges behind the blade tang when it opens. Pull the bar back with your index or middle finger and the blade folds shut - fully ambidextrous, no liner to flex.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eIs the GEO2508J legal to carry?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eFolding knives with a manual crossbar lock are legal to carry in most jurisdictions, but blade-length rules vary - check your local law before carrying.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eDoes the titanium handle scratch?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eAnodized titanium develops honest carry marks over time; the oxide layer beneath stays corrosion-proof. Stonewashed and dark finishes hide wear best.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat sharpening setup works for M390?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eDiamond or CBN stones from 320 to 1000 grit, then a 3000-grit ceramic or leather strop. Conventional aluminium-oxide stones barely cut 60-62 HRC steel.\u003c\/dd\u003e\n\u003c\/dl\u003e\u003ch2\u003eGEO Knife Belluf GEO2508J - Steel Comparison Table\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSteel\u003c\/th\u003e\n\u003cth\u003eTypical HRC\u003c\/th\u003e\n\u003cth\u003eEdge Retention\u003c\/th\u003e\n\u003cth\u003eCorrosion Resistance\u003c\/th\u003e\n\u003cth\u003eToughness\u003c\/th\u003e\n\u003cth\u003eSharpening Ease\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eBohler M390\u003c\/strong\u003e (this knife)\u003c\/td\u003e\n\u003ctd\u003e60-62\u003c\/td\u003e\n\u003ctd\u003eExceptional\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003ctd\u003eDifficult (diamond)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCPM-20CV\u003c\/td\u003e\n\u003ctd\u003e59-61\u003c\/td\u003e\n\u003ctd\u003eExceptional\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003ctd\u003eDifficult\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCPM-S35VN\u003c\/td\u003e\n\u003ctd\u003e58-60\u003c\/td\u003e\n\u003ctd\u003eVery Good\u003c\/td\u003e\n\u003ctd\u003eVery Good\u003c\/td\u003e\n\u003ctd\u003eBetter\u003c\/td\u003e\n\u003ctd\u003eModerate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e14C28N\u003c\/td\u003e\n\u003ctd\u003e59-61\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003ctd\u003eVery Easy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eD2\u003c\/td\u003e\n\u003ctd\u003e58-61\u003c\/td\u003e\n\u003ctd\u003eVery Good\u003c\/td\u003e\n\u003ctd\u003eFair (oil it)\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003ctd\u003eModerate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eGlossary of Key Terms\u003c\/h2\u003e\u003cstrong\u003eBohler M390\u003c\/strong\u003e\u003cbr\u003eA third-generation powder-metallurgy stainless from Bohler loaded with chromium, vanadium and molybdenum carbides. At 60-62 HRC it holds a working edge longer than almost any other production knife steel and still resists corrosion like a true stainless.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eCrossbar Lock\u003c\/strong\u003e\u003cbr\u003eA spring-loaded steel bar that spans the handle and wedges behind the blade tang. It is fully ambidextrous, keeps your fingers out of the blade path on closing and is among the strongest folder locks in production.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003e6AL4V Titanium\u003c\/strong\u003e\u003cbr\u003eThe Ti-6Al-4V aerospace alloy used for GEO's scales, clip, pivot cap and screws. It is roughly 45 percent lighter than steel, completely corrosion-proof and takes a hard, wear-resistant anodized surface.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eBronze Washers\u003c\/strong\u003e\u003cbr\u003ePhosphor-bronze pivot washers that give a smooth, controlled opening and shrug off pocket grit far better than bare titanium-on-steel contact.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eDrop Point\u003c\/strong\u003e\u003cbr\u003eA convex spine that sweeps down toward a strong, controllable point - the default all-round blade profile for hard-use EDC.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eFlat Grind\u003c\/strong\u003e\u003cbr\u003eBlade flats that taper in a straight line from the spine to the edge. It slices better than a hollow grind and stays much tougher behind the apex.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eVacuum and Cryogenic Heat Treatment\u003c\/strong\u003e\u003cbr\u003eA two-stage quench: vacuum hardening prevents decarburization and scale, then a deep cryogenic cycle converts retained austenite so the steel reaches its full hardness and dimensional stability.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eHRC\u003c\/strong\u003e\u003cbr\u003eRockwell Hardness C scale: the industry standard for reporting blade hardness. Higher numbers mean a harder, more wear-resistant edge that is also less forgiving of lateral load.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eStonewash Finish\u003c\/strong\u003e\u003cbr\u003eA tumbling process that bead-blasts the steel into a uniform matte grey. It hides carry scratches and kills glare far better than a satin finish.\u003cbr\u003e\u003cbr\u003e\u003ch2\u003eGEO Knife Belluf GEO2508J - Who Should Buy \/ Who Should Skip\u003c\/h2\u003e\u003ch3\u003eWho Should Buy\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eYou carry a knife every day and want edge retention measured in weeks, not days.\u003c\/li\u003e\n\u003cli\u003eYou want one ambidextrous folder both left- and right-handed users can run safely.\u003c\/li\u003e\n\u003cli\u003eYou collect M390 Titanium builds and want the whole GEO Knife line covered.\u003c\/li\u003e\n\u003cli\u003eYou need a lightweight EDC that still punches above its weight in hard cutting tasks.\u003c\/li\u003e\n\u003cli\u003eYou value titanium hardware, bronze washers and cryogenic heat treat as long-term reliability cues.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWho Should Skip\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eYou pry with your knife - M390 chips laterally; a tougher 3V or Nitro-V blade is the better beater.\u003c\/li\u003e\n\u003cli\u003eYou sharpen on budget oil stones only - 60-62 HRC steel needs diamond abrasives.\u003c\/li\u003e\n\u003cli\u003ePrefer heavy over-built knives - at 85.3 g this folder prioritizes light carry.\u003c\/li\u003e\n\u003cli\u003eYou need a knife for saltwater daily use - rinse discipline is still required despite stainless steel.\u003c\/li\u003e\n\u003cli\u003eYour local law caps blades below this model's length - check the specs before ordering.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eGEO Knife Belluf GEO2508J - Care \u0026amp; Maintenance\u003c\/h2\u003e\u003col\u003e\n\u003cli\u003eWipe the titanium scales with a dry microfiber cloth; anodized colour is a surface oxide layer that scuffs under grit.\u003c\/li\u003e\n\u003cli\u003eOne drop of quality knife oil at the pivot and crossbar contact points monthly, then cycle the action to spread it.\u003c\/li\u003e\n\u003cli\u003eBlow pocket lint out of the handle channel with compressed air before oiling so grit never grinds inside the pivot.\u003c\/li\u003e\n\u003cli\u003eSharpen on diamond or CBN plates; at 60-62 HRC conventional stones barely cut Bohler M390.\u003c\/li\u003e\n\u003cli\u003eUse light, consistent strokes and finish on leather - heavy pressure chips a hard, thin apex.\u003c\/li\u003e\n\u003cli\u003eClean the titanium with warm water and mild soap only; solvents and bleach discolour anodizing.\u003c\/li\u003e\n\u003cli\u003eNever pry, twist or lateral-load the tip; a 3.1 mm blade at 62 HRC chips before it bends.\u003c\/li\u003e\n\u003cli\u003eKeep the crossbar track clean; a lint-packed omega spring channel causes sluggish, gritty deployment.\u003c\/li\u003e\n\u003cli\u003eRe-torque clip and body screws with the correct Torx driver - titanium fasteners gall if you overtighten them.\u003c\/li\u003e\n\u003c\/ol\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"GEO Knife Belluf GEO2508J\",\"sku\":\"GEO2508J\",\"mpn\":\"GEO2508J\",\"productID\":\"GEO2508J\",\"brand\":{\"@type\":\"Brand\",\"name\":\"GEO Knife\"},\"manufacturer\":\"GEO Knife\",\"material\":\"Bohler M390 blade, titanium\",\"color\":\"titanium\",\"category\":\"Knives \u003e Folding Knives \u003e EDC\",\"description\":\"The GEO Knife Belluf GEO2508J is a compact 145 mm gentleman's folder by Fabian Hobbelen, built around a wide Bohler \u003ca href=\\\"\/collections\/m390\\\"\u003eM390\u003c\/a\u003e drop-point blade, Purple anodized 6AL4V titanium scales and a smooth \u003ca href=\\\"\/collections\/crossbar-lock-knives\\\"\u003ecrossbar lock\u003c\/a\u003e action\",\"additionalProperty\":[{\"@type\":\"PropertyValue\",\"name\":\"Model\",\"value\":\"GEO2508J\"},{\"@type\":\"PropertyValue\",\"name\":\"Product Type\",\"value\":\"Folding Knife\"},{\"@type\":\"PropertyValue\",\"name\":\"Brand\",\"value\":\"GEO Knife\"},{\"@type\":\"PropertyValue\",\"name\":\"Model Line\",\"value\":\"Belluf\"},{\"@type\":\"PropertyValue\",\"name\":\"Overall Length\",\"value\":\"5.7 inch \/ 145 mm\"},{\"@type\":\"PropertyValue\",\"name\":\"Blade Length\",\"value\":\"2.4 inch \/ 60 mm\"},{\"@type\":\"PropertyValue\",\"name\":\"Handle Length\",\"value\":\"3.3 inch \/ 85 mm\"},{\"@type\":\"PropertyValue\",\"name\":\"Handle Thickness\",\"value\":\"0.4 inch \/ 10 mm\"},{\"@type\":\"PropertyValue\",\"name\":\"Blade Width\",\"value\":\"1.1 inch \/ 28 mm\"},{\"@type\":\"PropertyValue\",\"name\":\"Blade Thickness\",\"value\":\"0.1 inch \/ 3.1 mm\"},{\"@type\":\"PropertyValue\",\"name\":\"Blade Material\",\"value\":\"Bohler M390\"},{\"@type\":\"PropertyValue\",\"name\":\"Blade Hardness\",\"value\":\"HRC 60-62\"},{\"@type\":\"PropertyValue\",\"name\":\"Blade Type\",\"value\":\"Drop Point\"},{\"@type\":\"PropertyValue\",\"name\":\"Blade Finish\",\"value\":\"Stonewash\"},{\"@type\":\"PropertyValue\",\"name\":\"Blade Grind\",\"value\":\"Flat\"},{\"@type\":\"PropertyValue\",\"name\":\"Heat Treatment\",\"value\":\"Vacuum \u0026 Cryogenic\"},{\"@type\":\"PropertyValue\",\"name\":\"Handle Material\",\"value\":\"6AL4V Titanium\"},{\"@type\":\"PropertyValue\",\"name\":\"Lock Type\",\"value\":\"Crossbar\"},{\"@type\":\"PropertyValue\",\"name\":\"Dexterity\",\"value\":\"Ambidextrous\"},{\"@type\":\"PropertyValue\",\"name\":\"Washers\",\"value\":\"Bronze Washers\"},{\"@type\":\"PropertyValue\",\"name\":\"Pocket Clip\",\"value\":\"6AL4V Titanium, Tip-up Right\"},{\"@type\":\"PropertyValue\",\"name\":\"Item Weight\",\"value\":\"3.01 oz \/ 85.3 g\"},{\"@type\":\"PropertyValue\",\"name\":\"Designer\",\"value\":\"Fabian Hobbelen\"},{\"@type\":\"PropertyValue\",\"name\":\"Country of Origin\",\"value\":\"China\"}],\"offers\":{\"@type\":\"Offer\",\"price\":\"159.20\",\"priceCurrency\":\"USD\",\"availability\":\"https:\/\/schema.org\/InStock\",\"itemCondition\":\"https:\/\/schema.org\/NewCondition\"},\"weight\":{\"@type\":\"QuantitativeValue\",\"value\":85.3,\"unitCode\":\"GRM\",\"name\":\"85.3 g (3.01 oz)\"}}\u003c\/script\u003e","brand":"GEO Knife","offers":[{"title":"Default Title","offer_id":50534143787205,"sku":"GEO2508J","price":159.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0584\/0699\/4117\/files\/01_e8052ba7-2edf-4a7a-8f17-f298db961e24.jpg?v=1790247185"}],"url":"https:\/\/edcmall.cn\/es\/collections\/geo-knife-belluf.oembed","provider":"EDCMALL","version":"1.0","type":"link"}