Trivisa Firefly Ultra-M YD04-M-M Mirror Finish M390 Blade Titanium Handle Crossbar Lock Folding Knife

Designed for everyday carry and outdoor adventures, the Trivisa Firefly Ultra-M YD04-M-M combines a mirror-finished M390 stainless-steel blade with a lightweight titanium handle. The 2.99-inch swedge blade has a hardness of 60±2HRC and offers wear resistance, corrosion resistance, and dependable edge retention. A crossbar lock helps secure the blade during use, while ceramic ball bearings support smooth opening. Measuring 6.69 inches overall and weighing 3.07 ounces, this folding knife is easy to carry. It closes to 3.7 inches for compact storage. Suitable for everyday carry, camping, hiking, fishing, and hunting, it pairs practical dimensions with a refined finish. The blade is 0.13 inches thick and 0.9 inches wide, offering a versatile cutting profile for outdoor tasks and daily use.

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:Swedge
Blade Material: M390 Steel Blade
Blade Finished: Mirror Finished
Handle Material:Titanium Handle
Lock Style:Crossbar Lock
Hardness:60±2HRC
Bearing:Ceramic Ball Bearing

Size:
Overall length-6.69"(171mm)
Blade length-2.99"(76mm)
Closed length-3.7"(95mm)
Blade width-0.9''(23mm)
Blade thickness-0.13''(3mm)
Net Weight:3.07oz(87g)

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