Trivisa Butterfly Ultra-S JM06U-S-M M390 Blade Titanium Handle Crossbar Lock Folding Knife

The Trivisa Butterfly Ultra-S JM06U-S-M combines a compact profile with premium materials for everyday carry and outdoor use. Its 2.99-inch clip-point blade is crafted from M390 stainless steel, known for strong wear and corrosion resistance and dependable edge retention. A stonewashed finish gives the blade a subdued appearance, while the titanium handle keeps the design lightweight and durable. The crossbar lock provides secure, convenient operation, and ceramic ball bearings support smooth deployment. Measuring 6.76 inches overall and 3.77 inches when closed, this folding knife weighs just 3.3 ounces for easy carry. With a blade hardness of 60±2 HRC, it is suited to practical cutting tasks on hikes, camping trips, fishing outings, and other everyday adventures. Diamond abrasives may be needed for sharpening.

M390 Blade Introduction

M390 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.

Specification

Designer:TRIVISA Team
Style:Clip Point
Blade Material：M390 Steel
Blade Finished：Stonewashed
Handle Material: Titanium
Lock Style:Crossbar lock
Hardness:60±2HRC
Bearing:Ceramic ball bearing

Size:
Overall length-6.76"(172mm)
Blade length-2.99" (76mm)
Closed length-3.77"(96mm)
Blade width-0.96''(24.5mm)
Blade thickness-0.12''(3.1mm)
Net Weight:3.3oz(93.5g)

Usage:Outdoor survival,EDC,hunting,fishing, hiking and camping

Trivisa Butterfly Ultra-S - Stonewashed M390 Clip Point in a Titanium Frame

The M390 blade on this Trivisa Butterfly Ultra-S is finished in stonewashed, riding on a gunmetal anodized titanium handle with a crossbar lock and ceramic bearings at 93.5 g (3.3 oz). More folding knives and EDC gear at EDCMALL.

M390: Premium Powder Steel in a Pocket-Sized Frame

Bohler 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 CPM-S35VN, Nitro-V and 14C28N in the table below.

Why the Butterfly Ultra-S Belongs in Your Pocket

• 2.99 inch Bohler M390 clip point at 60+/-2 HRC with a flat grind.
• Stonewashed blade finish - a matte tumble finish that hides carry scratches and kills glare.
• Anodized titanium handle with three milled weight-reduction cutouts.
• Red anodized thumb stud for fast, one-handed opening.
• Crossbar lock: ambidextrous, dirt-tolerant and fully finger-safe on closing.
• Ceramic ball bearing pivot that stays glassy for years.
• Black steel pocket clip and lanyard hole for versatile carry.
• 93.5 g (3.3 oz) on a 6.76 inch frame - premium steel without pocket drag.

Best Uses for the Butterfly Ultra-S

• Daily pocket duty: mail, packaging, tags and food prep on a blade that will not rust.
• Office and urban carry where the anodized titanium frame reads as jewellery-grade finish.
• Weekend hiking and camping where corrosion resistance beats a semi-stainless workhorse.
• Collection display for the M390 pedigree and the red-accent hardware signature.
• Precision slicing tasks where the fine clip point tip earns its keep.

Frequently Asked Questions

What steel is the Butterfly Ultra blade?
Bohler 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.

How does the knife open?
Press 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.

What is the crossbar lock?
A 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.

What are the handle details?
A gunmetal anodized titanium handle with three milled cutouts, a black steel pocket clip, a lanyard hole and Trivisa's red anodized pivot accents.

How big is it?
6.76" (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.

Bohler M390 vs. Common Pocket Knife Steels

Steel	Typical HRC	Edge Retention	Corrosion Resistance	Toughness	Sharpening Ease
Bohler M390 (this knife)	60-62	Excellent	Excellent	Fair	Hard
CPM-20CV	61-62	Excellent	Excellent	Fair	Hard
CPM-MagnaCut	62-63	Excellent	Excellent	Excellent	Moderate
CPM-S35VN	58-60	Very Good	Very Good	Good	Moderate
154CM	58-61	Good	Good	Very Good	Moderate
14C28N	58-61	Good	Excellent	Good	Very Easy
8Cr13MoV	57-59	Fair	Good	Good	Very Easy

Bohler 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.

Glossary of Key Terms

Trivisa
A Chinese knife brand building titanium-frame folders around premium steels, with a clean in-house design language and red anodized hardware accents.

Butterfly Ultra
Trivisa's compact M390 clip-point folder: 2.99 inch blade, titanium handle, crossbar lock, ceramic bearings, 93.5 g.

M390 Steel
Bohler'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.

Crossbar Lock
A 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.

Ceramic Ball Bearings
Hardened ceramic balls around the pivot. The action stays glassy for years, and ceramic will not rust or flat-spot.

Titanium Handle
Aerospace-grade Ti-6Al-4V scales: stronger than steel by weight, immune to corrosion, and warm-feeling in cold weather.

Anodized Titanium
Titanium colour produced by heat or voltage, forming a surface oxide layer. It is not paint - it will not chip or peel.

DLC Coating
Diamond-like carbon: a hard, dark, low-friction layer bonded to the steel. It resists scratches and glare; edge wear is cosmetic, not structural.

Stonewash Finish
A tumbling process that beads the steel into a uniform matte grey, hiding carry scratches and killing glare far better than satin.

Black Stonewash Finish
A dark stonewashed treatment that reads black in low light and grey at the wear points. Hides scratches better than any satin.

Clip Point
A blade whose spine is 'clipped' down toward the tip, leaving a fine, sharp point with plenty of belly behind it for slicing.

Thumb Stud
A small post on the blade near the pivot; press it with your thumb to swing the blade out one-handed. Trivisa anodizes theirs red.

60+/-2 HRC
The Rockwell C hardness band the blade is heat treated to: hard enough for long edge life, still honest to sharpen at home with patience.

Who Should Buy the Butterfly Ultra-S

• Buyers who want M390 edge retention in a sub-$200 titanium folder.
• Anyone who values an ambidextrous crossbar lock over flipper tactics.
• Collectors chasing the red-accent Trivisa hardware signature.
• Wet-climate carriers tired of wiping semi-stainless blades dry.
• Minimalists who like the milled three-hole skeletonised look.

Who Should Skip It

• Budget-first buyers - a 14C28N folder at a third of the price cuts cardboard just as well.
• Anyone who wants a fidget-style flipper or button action; this opens on a thumb stud.
• Users who need a pry bar; the fine M390 clip point is a slicer, not a lever.
• People who dislike stonewashed wear marks - polished finishes stay prettier longer.

Care & Maintenance

• Wipe the blade dry after every use; M390 is highly stainless, but the finish lasts longer when wiped clean.
• One 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.
• Sharpen on a diamond plate or CBN stone at 15-18 degrees per side; M390's vanadium carbides defeat ordinary aluminium-oxide stones.
• Work in light passes and finish on a loaded strop - heavy pressure on a 60+/-2 HRC edge just rounds the apex you set.
• Do not pry, twist or use the tip as a screwdriver; the fine M390 apex can chip under lateral load.
• Wipe anodized titanium scales with a dry microfibre cloth; the colour is a surface oxide, so keep solvents off it.
• Blow lint out of the crossbar-lock channel before oiling; grit under the lock bar is the usual cause of a gritty action.
• Check the body and clip screws every few months with the correct Torx driver; vibration on a keyring or pack can back them out.
• Store the knife closed and dry, never sealed in a damp pouch against the steel.