Trivisa Firefly Ultra-Doom Mirror Finish M390 Blade Handcrafted Titanium Handle Crossbar Lock Folding Knife

Designed for everyday carry and outdoor adventures, the Trivisa Firefly pairs a distinctive mirror-finish look with a handcrafted titanium handle. Its M390 stainless-steel blade is selected for wear resistance, corrosion resilience, and lasting edge retention. A crossbar lock supports secure operation, while ceramic ball bearings help deliver smooth opening. The rainbow-gradient PVD blade finish adds a visual accent. Measuring 6.69 inches overall, with a 2.99-inch blade and 3.7-inch closed length, it offers a compact format for carry. The blade is 0.13 inches thick, and the knife weighs 2.96 ounces. With a stated hardness of 60 ± 2 HRC, this lightweight folder is suited to hiking, camping, fishing, hunting, and everyday utility. Its capable performance comes in a practical pocket-sized design.

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: Titanium Blade
Blade Finished: Rainbow gradient PVD coating
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:2.96oz(84g)

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