Extrema Ratio LKU01 Urban Dark – Folding Tactical Knife

The Extrema Ratio LKU01 Urban Dark is a folding knife born from the collaboration between Extrema Ratio and Master-at-Arms Danilo Rossi Lajolo di Cossano. Designed for discreet urban carry and professional use, this knife offers fast deployment, robust construction, and inspiration from traditional Italian close combat fencing.

Technical Features

Overall length: 223 mm

Blade length: 100 mm

Blade thickness: 4 mm

Weight: 123 g

Blade material: Böhler N690 steel (58 HRC)

Finish: MIL-C-13924 burnishing

Handle: anodized Anticorodal aluminum

Opening: quick flick with cartridge-base-inspired thumb pin

Clip: stainless steel, removable and reversible

User Benefits

✔ Compact and low-profile design

✔ Fast and secure one-handed opening

✔ Non-slip ergonomic grip

✔ Reversible clip for left- and right-handed users

✔ Precise control for close-quarters and utility use

✔ Made in Italy using premium materials

Warnings (ENG)

• Keep out of reach of children
• Do not tamper with the mechanism in any way
• Do not use on people or animals
• Use only for its intended purpose
• Clean and lubricate periodically
• Store away from heat and moisture
• Always check local knife carry laws