{"product_id":"trivisa-butterfly-ultra-b","title":"Trivisa Butterfly Ultra-B M390 Blade Titanium Handle Crossbar Lock Folding Knife","description":"\u003cp\u003eThe Trivisa Butterfly Ultra-B combines a compact profile with practical materials for everyday carry and outdoor tasks. Its 2.99-inch clip-point blade is made from M390 stainless steel and finished in black stonewash. The 60±2 HRC blade is designed to hold an edge, while its high hardness may require diamond abrasives for sharpening. A titanium handle and crossbar lock complete the lightweight folding design, supported by ceramic ball bearings for smooth opening. Measuring 6.76 inches overall and 3.77 inches closed, the knife weighs 3.3 ounces. The blade is 0.12 inches thick and 0.96 inches wide. Designed by the Trivisa Team, it suits camping, hiking, fishing, hunting, and everyday carry where local laws permit.\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\u003eDesigner:TRIVISA Team\u003cbr\u003eStyle:Clip Point\u003cbr\u003eBlade Material：M390 Steel\u003cbr\u003eBlade Finished：Black Stonwash\u003cbr\u003eHandle Material: Titanium\u003cbr\u003eLock Style:Crossbar lock\u003cbr\u003eHardness:60±2HRC\u003cbr\u003eBearing:Ceramic ball bearing\u003c\/p\u003e\n\u003cp\u003eSize:\u003cbr\u003eOverall length-6.76\"(172mm)\u003cbr\u003eBlade length-2.99\" (76mm)\u003cbr\u003eClosed length-3.77\"(96mm)\u003cbr\u003eBlade width-0.96''(24.5mm)\u003cbr\u003eBlade thickness-0.12''(3.1mm)\u003cbr\u003eNet Weight:3.3oz(93.5g)\u003c\/p\u003e\n\u003cp\u003eUsage:Outdoor survival,EDC,hunting,fishing, hiking and camping\u003c\/p\u003e\n\u003ch2\u003eTrivisa Butterfly Ultra-B - Black Stonewash M390 Clip Point in a Titanium Frame\u003c\/h2\u003e\n\u003cp\u003eThe \u003ca href=\"\/zh-hans\/collections\/m390\"\u003eM390\u003c\/a\u003e blade on this Trivisa Butterfly Ultra-B is finished in black stonewash, riding on a tan anodized titanium handle with a \u003ca href=\"\/zh-hans\/collections\/crossbar-lock-knives\"\u003ecrossbar lock\u003c\/a\u003e and ceramic bearings at 93.5 g (3.3 oz). More \u003ca href=\"\/zh-hans\/collections\/folding-knives\"\u003efolding knives\u003c\/a\u003e and \u003ca href=\"\/zh-hans\/collections\/edc-all-products\"\u003eEDC gear\u003c\/a\u003e at EDCMALL.\u003c\/p\u003e\n\u003ch2\u003eM390: Premium Powder Steel in a Pocket-Sized Frame\u003c\/h2\u003e\n\u003cp\u003eBohler M390 is the powder-metallurgy benchmark: roughly 20 percent chromium, a dense vanadium carbide field, and edge life that runs weeks past mid-range steels. On this 2.99 inch clip point, hardened to 60+\/-2 HRC, it cuts packaging, cord and food for a month between touch-ups and will not spot in a sweaty pocket. The honest trade is sharpening - bring a diamond plate - and no prying with the fine tip. The titanium frame carries three milled cutouts, a black steel clip and Trivisa's red anodized stud. Compare it with \u003ca href=\"\/zh-hans\/collections\/cpm-s35vn\"\u003eCPM-S35VN\u003c\/a\u003e, \u003ca href=\"\/zh-hans\/collections\/nitro-v\"\u003eNitro-V\u003c\/a\u003e and \u003ca href=\"\/zh-hans\/collections\/14c28n\"\u003e14C28N\u003c\/a\u003e in the table below.\u003c\/p\u003e\n\u003ch2\u003eWhy the Butterfly Ultra-B Belongs in Your Pocket\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e2.99 inch Bohler M390 clip point at 60+\/-2 HRC with a flat grind.\u003c\/li\u003e\n\u003cli\u003eBlack Stonewash blade finish - a dark tumble treatment that reads black in low light and grey at the wear points.\u003c\/li\u003e\n\u003cli\u003eAnodized titanium handle with three milled weight-reduction cutouts.\u003c\/li\u003e\n\u003cli\u003eRed anodized thumb stud for fast, one-handed opening.\u003c\/li\u003e\n\u003cli\u003eCrossbar lock: ambidextrous, dirt-tolerant and fully finger-safe on closing.\u003c\/li\u003e\n\u003cli\u003eCeramic ball bearing pivot that stays glassy for years.\u003c\/li\u003e\n\u003cli\u003eBlack steel pocket clip and lanyard hole for versatile carry.\u003c\/li\u003e\n\u003cli\u003e93.5 g (3.3 oz) on a 6.76 inch frame - premium steel without pocket drag.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBest Uses for the Butterfly Ultra-B\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDaily pocket duty: mail, packaging, tags and food prep on a blade that will not rust.\u003c\/li\u003e\n\u003cli\u003eOffice and urban carry where the anodized titanium frame reads as jewellery-grade finish.\u003c\/li\u003e\n\u003cli\u003eWeekend hiking and camping where corrosion resistance beats a semi-stainless workhorse.\u003c\/li\u003e\n\u003cli\u003eCollection display for the M390 pedigree and the red-accent hardware signature.\u003c\/li\u003e\n\u003cli\u003ePrecision slicing tasks where the fine clip point tip earns its keep.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWhat steel is the Butterfly Ultra blade?\u003c\/strong\u003e\u003cbr\u003eBohler M390 powder-metallurgy stainless, hardened to 60+\/-2 HRC. It offers first-class edge retention and corrosion resistance; sharpen it on diamond abrasives and keep prying loads off the fine tip.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the knife open?\u003c\/strong\u003e\u003cbr\u003ePress the red anodized thumb stud on the blade and the ceramic ball bearing pivot swings it out one-handed; the crossbar lock secures the blade open.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the crossbar lock?\u003c\/strong\u003e\u003cbr\u003eA spring-loaded bar that rides in handle cutouts and wedges behind the blade tang from above. It is fully ambidextrous and keeps your fingers out of the closing path - the same mechanism family as Benchmade's Axis lock.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat are the handle details?\u003c\/strong\u003e\u003cbr\u003eA tan anodized titanium handle with three milled cutouts, a black steel pocket clip, a lanyard hole and Trivisa's red anodized pivot accents.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow big is it?\u003c\/strong\u003e\u003cbr\u003e6.76\" (172 mm) open, 3.77\" (96 mm) closed, 2.99\" (76 mm) blade at 0.12\" (3.1 mm), and 93.5 g (3.3 oz) - a compact titanium folder that carries like a much plainer knife.\u003c\/p\u003e\n\u003ch3\u003eBohler M390 vs. Common Pocket Knife Steels\u003c\/h3\u003e\u003ctable border=\"1\" cellpadding=\"6\" cellspacing=\"0\"\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\u003eBohler M390 (this knife)\u003c\/td\u003e\n\u003ctd\u003e60-62\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003ctd\u003eFair\u003c\/td\u003e\n\u003ctd\u003eHard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCPM-20CV\u003c\/td\u003e\n\u003ctd\u003e61-62\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003ctd\u003eFair\u003c\/td\u003e\n\u003ctd\u003eHard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCPM-MagnaCut\u003c\/td\u003e\n\u003ctd\u003e62-63\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003ctd\u003eModerate\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\u003eGood\u003c\/td\u003e\n\u003ctd\u003eModerate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e154CM\u003c\/td\u003e\n\u003ctd\u003e58-61\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003ctd\u003eVery Good\u003c\/td\u003e\n\u003ctd\u003eModerate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e14C28N\u003c\/td\u003e\n\u003ctd\u003e58-61\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\u003e8Cr13MoV\u003c\/td\u003e\n\u003ctd\u003e57-59\u003c\/td\u003e\n\u003ctd\u003eFair\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003ctd\u003eVery Easy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003e\u003cem\u003eBohler M390 is an Austrian powder-metallurgy stainless in the same class as CPM-20CV and CTS-204P: roughly 1.9 percent carbon and 20 percent chromium-carbide-forming alloy deliver first-class edge retention and near-saltwater corrosion resistance. Hardened to 60+\/-2 HRC, it holds a working edge for weeks of packaging and cord duty, but the dense carbide volume means sharpening wants a diamond plate and the fine apex can chip under prying loads. HRC figures are typical mill ranges, not a guarantee for any single blade.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch2\u003eGlossary of Key Terms\u003c\/h2\u003e\n\u003cstrong\u003eTrivisa\u003c\/strong\u003e\u003cbr\u003eA Chinese knife brand building titanium-frame folders around premium steels, with a clean in-house design language and red anodized hardware accents.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eButterfly Ultra\u003c\/strong\u003e\u003cbr\u003eTrivisa's compact M390 clip-point folder: 2.99 inch blade, titanium handle, crossbar lock, ceramic bearings, 93.5 g.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eM390 Steel\u003c\/strong\u003e\u003cbr\u003eBohler's Austrian powder-metallurgy stainless in the 20CV\/204P class: first-class edge retention, near-saltwater corrosion resistance, and a taste for diamond sharpening stones.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eCrossbar Lock\u003c\/strong\u003e\u003cbr\u003eA spring-loaded bar spanning the handle that wedges behind the blade tang. Fully ambidextrous, keeps fingers out of the closing path, and among the strongest folder locks built.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eCeramic Ball Bearings\u003c\/strong\u003e\u003cbr\u003eHardened ceramic balls around the pivot. The action stays glassy for years, and ceramic will not rust or flat-spot.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eTitanium Handle\u003c\/strong\u003e\u003cbr\u003eAerospace-grade Ti-6Al-4V scales: stronger than steel by weight, immune to corrosion, and warm-feeling in cold weather.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eAnodized Titanium\u003c\/strong\u003e\u003cbr\u003eTitanium colour produced by heat or voltage, forming a surface oxide layer. It is not paint - it will not chip or peel.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eDLC Coating\u003c\/strong\u003e\u003cbr\u003eDiamond-like carbon: a hard, dark, low-friction layer bonded to the steel. It resists scratches and glare; edge wear is cosmetic, not structural.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eStonewash Finish\u003c\/strong\u003e\u003cbr\u003eA tumbling process that beads the steel into a uniform matte grey, hiding carry scratches and killing glare far better than satin.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eBlack Stonewash Finish\u003c\/strong\u003e\u003cbr\u003eA dark stonewashed treatment that reads black in low light and grey at the wear points. Hides scratches better than any satin.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eClip Point\u003c\/strong\u003e\u003cbr\u003eA blade whose spine is 'clipped' down toward the tip, leaving a fine, sharp point with plenty of belly behind it for slicing.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eThumb Stud\u003c\/strong\u003e\u003cbr\u003eA small post on the blade near the pivot; press it with your thumb to swing the blade out one-handed. Trivisa anodizes theirs red.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003e60+\/-2 HRC\u003c\/strong\u003e\u003cbr\u003eThe Rockwell C hardness band the blade is heat treated to: hard enough for long edge life, still honest to sharpen at home with patience.\u003cbr\u003e\u003cbr\u003e\n\u003ch2\u003eWho Should Buy the Butterfly Ultra-B\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBuyers who want M390 edge retention in a sub-$200 titanium folder.\u003c\/li\u003e\n\u003cli\u003eAnyone who values an ambidextrous crossbar lock over flipper tactics.\u003c\/li\u003e\n\u003cli\u003eCollectors chasing the red-accent Trivisa hardware signature.\u003c\/li\u003e\n\u003cli\u003eWet-climate carriers tired of wiping semi-stainless blades dry.\u003c\/li\u003e\n\u003cli\u003eMinimalists who like the milled three-hole skeletonised look.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho Should Skip It\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBudget-first buyers - a 14C28N folder at a third of the price cuts cardboard just as well.\u003c\/li\u003e\n\u003cli\u003eAnyone who wants a fidget-style flipper or button action; this opens on a thumb stud.\u003c\/li\u003e\n\u003cli\u003eUsers who need a pry bar; the fine M390 clip point is a slicer, not a lever.\u003c\/li\u003e\n\u003cli\u003ePeople who dislike stonewashed wear marks - polished finishes stay prettier longer.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eCare \u0026amp; Maintenance\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eWipe the blade dry after every use; M390 is highly stainless, but the finish lasts longer when wiped clean.\u003c\/li\u003e\n\u003cli\u003eOne drop of light knife oil at the pivot every two to three months, then swing the blade a dozen times so oil reaches the ceramic bearing.\u003c\/li\u003e\n\u003cli\u003eSharpen on a diamond plate or CBN stone at 15-18 degrees per side; M390's vanadium carbides defeat ordinary aluminium-oxide stones.\u003c\/li\u003e\n\u003cli\u003eWork in light passes and finish on a loaded strop - heavy pressure on a 60+\/-2 HRC edge just rounds the apex you set.\u003c\/li\u003e\n\u003cli\u003eDo not pry, twist or use the tip as a screwdriver; the fine M390 apex can chip under lateral load.\u003c\/li\u003e\n\u003cli\u003eWipe anodized titanium scales with a dry microfibre cloth; the colour is a surface oxide, so keep solvents off it.\u003c\/li\u003e\n\u003cli\u003eBlow lint out of the crossbar-lock channel before oiling; grit under the lock bar is the usual cause of a gritty action.\u003c\/li\u003e\n\u003cli\u003eCheck the body and clip screws every few months with the correct Torx driver; vibration on a keyring or pack can back them out.\u003c\/li\u003e\n\u003cli\u003eStore the knife closed and dry, never sealed in a damp pouch against the steel.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"Trivisa Butterfly Ultra-B M390 Blade Titanium Handle Crossbar Lock Folding Knife\",\n  \"sku\": \"Butterfly Ultra-B\",\n  \"mpn\": \"Butterfly Ultra-B\",\n  \"productID\": \"Butterfly Ultra-B\",\n  \"description\": \"Trivisa Butterfly Ultra-B folding knife: 2.99 inch Bohler M390 clip point blade at 60+\/-2 HRC with a black stonewash finish, tan anodized titanium titanium handle with milled cutouts, crossbar lock, ceramic ball bearing pivot, red anodized thumb stud opening, black steel pocket clip, 93.5 g, 6.76 inch overall.\",\n  \"brand\": { \"@type\": \"Brand\", \"name\": \"Trivisa\" },\n  \"manufacturer\": { \"@type\": \"Organization\", \"name\": \"Trivisa\" },\n  \"material\": \"M390, Titanium\",\n  \"color\": \"Multi\",\n    \"weight\": { \"@type\": \"QuantitativeValue\", \"value\": 93.5, \"unitCode\": \"GRM\" },\n  \"category\": \"Knives\",\n  \"additionalProperty\": [\n      { \"@type\": \"PropertyValue\", \"name\": \"Brand\", \"value\": \"Trivisa\" },\n      { \"@type\": \"PropertyValue\", \"name\": \"Model\", \"value\": \"Butterfly Ultra-B\" },\n      { \"@type\": \"PropertyValue\", \"name\": \"Model Number\", \"value\": \"Butterfly Ultra-B\" },\n      { \"@type\": \"PropertyValue\", \"name\": \"Product Type\", \"value\": \"Folding Knife\" },\n      { \"@type\": \"PropertyValue\", \"name\": \"Material\", \"value\": \"M390\" },\n      { \"@type\": \"PropertyValue\", \"name\": \"Handle Material\", \"value\": \"Tan Anodized Titanium\" },\n      { \"@type\": \"PropertyValue\", \"name\": \"Lock Type\", \"value\": \"Crossbar Lock\" },\n      { \"@type\": \"PropertyValue\", \"name\": \"Blade Style\", \"value\": \"Clip Point\" },\n      { \"@type\": \"PropertyValue\", \"name\": \"Blade Grind\", \"value\": \"Flat\" },\n      { \"@type\": \"PropertyValue\", \"name\": \"Blade Finish\", \"value\": \"Black Stonewash\" },\n      { \"@type\": \"PropertyValue\", \"name\": \"Overall Length\", \"value\": \"6.76\\\" (172 mm)\" },\n      { \"@type\": \"PropertyValue\", \"name\": \"Blade Length\", \"value\": \"2.99\\\" (76 mm)\" },\n      { \"@type\": \"PropertyValue\", \"name\": \"Blade Thickness\", \"value\": \"0.12\\\" (3.1 mm)\" },\n      { \"@type\": \"PropertyValue\", \"name\": \"Closed Length\", \"value\": \"3.77\\\" (96 mm)\" },\n      { \"@type\": \"PropertyValue\", \"name\": \"Weight\", \"value\": \"93.5 g (3.3 oz)\" },\n      { \"@type\": \"PropertyValue\", \"name\": \"Designer\", \"value\": \"TRIVISA Team\" },\n      { \"@type\": \"PropertyValue\", \"name\": \"Opening\", \"value\": \"Red anodized thumb stud\" },\n      { \"@type\": \"PropertyValue\", \"name\": \"Carry\", \"value\": \"Black steel pocket clip, tip-up\" },\n      { \"@type\": \"PropertyValue\", \"name\": \"Hardness\", \"value\": \"60+\/-2 HRC\" },\n      { \"@type\": \"PropertyValue\", \"name\": \"SKU\", \"value\": \"Butterfly Ultra-B\" },\n      { \"@type\": \"PropertyValue\", \"name\": \"Price\", \"value\": \"162.69\" },\n      { \"@type\": \"PropertyValue\", \"name\": \"Availability\", \"value\": \"InStock\" }\n  ],\n  \"offers\": {\n    \"@type\": \"Offer\",\n    \"url\": \"https:\/\/edcmall.cn\/products\/trivisa-butterfly-ultra-b\",\n    \"priceCurrency\": \"USD\",\n    \"price\": \"162.69\",\n    \"availability\": \"https:\/\/schema.org\/InStock\",\n    \"itemCondition\": \"https:\/\/schema.org\/NewCondition\"\n  }\n}\n\u003c\/script\u003e","brand":"Trivisa Knives","offers":[{"title":"Default Title","offer_id":50882110947525,"sku":null,"price":162.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0584\/0699\/4117\/files\/01_44701934-b3f0-411e-aa68-000bee9127f7.jpg?v=1793863092","url":"https:\/\/edcmall.cn\/zh-hans\/products\/trivisa-butterfly-ultra-b","provider":"EDCMALL","version":"1.0","type":"link"}