Trivisa Sloth Ultra-GC YD05-GC-M M390 Blade Carbon Fiber Handle Crossbar Lock Folding Knife

The TRIVISA Sloth Ultra-GC YD05-GC-M combines a compact Wharncliffe blade with a lightweight carbon fiber handle for everyday carry and outdoor tasks. Its 2.54-inch M390 stainless steel blade features a satin finish and a hardness rating of 60±2 HRC. Known for wear and corrosion resistance, M390 is designed to retain its edge through regular use, though its hardness can make sharpening more demanding. A crossbar lock secures the blade open, while ceramic ball bearings support smooth operation. Measuring 5.74 inches overall and weighing just 2.04 ounces, this folding knife fits easily into a pocket or pack. Designed by the TRIVISA team, it is suited to EDC, camping, hiking, fishing, and hunting.

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: Wharncliffe
Blade Material:M390 steel
Blade Finished: Satin
Handle Material:Carbon Fiber
Lock Style:Crossbar lock
Hardness:60±2HRC
Bearing:Ceramic ball bearing

Size:
Overall length-5.74"(147mm)
Blade length-2.54" (64.5mm)
Closed length-3.2"(8.28mm)
Blade width-0.9''(23mm)
Blade thickness-0.12''(3mm)
Net Weight:2.04oz(57.9g)

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

Trivisa Sloth Ultra-GC - Satin M390 Wharncliffe with a Green Carbon Fiber Handle

The Trivisa Sloth Ultra-GC pairs a 2.54 inch M390 Wharncliffe in satin with a green carbon fiber handle, a crossbar lock and ceramic bearings at just 57.9 g (2.04 oz). More folding knives at EDCMALL.

M390 in a Fifth-Pocket Format

The Sloth Ultra is the sleeper pick of the Trivisa range: a true Bohler M390 Wharncliffe - 2.54 inches of straight cutting edge at 60+/-2 HRC - wrapped in a 5.74 inch frame that weighs less than two ounces. The marbled carbon fiber handle is milled with copper veining on the PC and PL variants, giving a one-of-one look that patinas with handling. This is the knife for users who want premium powder steel in a package that disappears in the pocket. Compare M390 with CPM-S35VN, CPM-20CV and MagnaCut in the table below.

Why the Sloth Ultra-GC Belongs in Your Pocket

• 2.54 inch Bohler M390 Wharncliffe at 60+/-2 HRC with a flat grind.
• Satin blade finish - clean longitudinal grind lines that cut glare and show the steel's structure.
• Green Carbon Fiber handle - marbled carbon fiber laminate - rigid, light and immune to humidity.
• Crossbar lock: ambidextrous, dirt-tolerant and finger-safe on closing.
• Ceramic ball bearing pivot for a glassy swing.
• Red anodized thumb stud and hardware accents.
• Steel pocket clip, tip-up.
• Just 57.9 g (2.04 oz) and 5.74 inches open - premium steel that disappears in the pocket.

Best Uses for the Sloth Ultra-GC

• Fifth-pocket and weight-sensitive carry where 57.9 g disappears entirely.
• Precision work: the straight Wharncliffe edge excels at tape, film and scoring cuts.
• Office carry where the marbled carbon fiber reads as designer hardware.
• Collection building across the three finish and handle variants.
• Gift for someone who wants premium steel without a bulky frame.

Frequently Asked Questions

What steel is the blade?
Bohler M390 powder-metallurgy stainless at 60+/-2 HRC. First-class edge retention and corrosion resistance; sharpen on diamond abrasives and keep pry loads off the fine edge.

Why a Wharncliffe blade?
The mostly straight edge puts the full cutting line under fingertip control - tape, boxes, film and food slice with a pull-stroke precision a drop point cannot match.

What is the handle material?
Green Carbon Fiber - marbled carbon fiber laminate - rigid, light and immune to humidity.

How does it open and lock?
The red anodized thumb stud swings the blade out on ceramic ball bearings; the crossbar lock wedges behind the tang and releases with a pull of the bar.

How big is it?
5.74" (147 mm) open, 3.2" (81.3 mm) closed, 2.54" (64.5 mm) blade at 0.12" (3 mm), and just 57.9 g (2.04 oz) - small, but the steel is the real thing.

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 value folders around premium steels with a clean in-house design language.

Sloth Ultra
Trivisa's small M390 Wharncliffe: a 2.54 inch blade on a marbled carbon fiber handle with crossbar lock, just 57.9 g and 5.74 inches open.

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.

Wharncliffe Blade
A mostly straight edge with the spine sloping gently to the tip, putting the full edge length under fingertip control for precise cuts.

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.

Carbon Fiber
Woven carbon cloth cured in resin: rigid, extremely light and immune to humidity, with a depth of pattern no plain polymer can match.

Copper Handle
Solid copper scales with living-finish patina that darkens with handling; naturally antimicrobial and satisfyingly dense in the pocket.

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

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.

Copper Carbon Fiber
Carbon fiber laminate layered over a copper core so the milled scale shows copper veining that patinas with handling.

5.74 Inches Overall
A truly small folder that fits the fifth pocket - yet the M390 blade is genuine premium steel, not a toy.

Who Should Buy the Sloth Ultra-GC

• Buyers who want M390 in the smallest possible premium frame.
• Weight-conscious carriers - 57.9 g is lighter than most keys-on-a-ring setups.
• Fans of marbled carbon fiber and copper veining finishes.
• Precision-cut users: tape, film, scoring, packaging.
• Collectors completing the PC / GC / PL trio.

Who Should Skip It

• Large-handed users - the 5.74 inch frame is genuinely small.
• Anyone who wants heavy cutting; 3 mm stock and a 2.54 inch blade are for slicing.
• Buyers who want a cheap beater - this is a premium steel showpiece.
• People who dislike small lock engagement; the crossbar is compact by design.

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.