The Extrema Ratio ECM (Einsatzkommando Cobra Messer) is a fixed blade multipurpose knife, designed for operational use for the famous Einsatzkommando “Cobra” special unit of the Austrian police, whose logo is laser engraved on the heel of the blade.
The Extrema Ratio ECM combines the characteristics of a practical tool and those of a reliable weapon, in a compact configuration with a total weight of 240g. The Extrema blade is made of Böhler N690 steel, hardened to 58 HRC and is 116 mm long, 5 mm thick and equipped with a flat edge. The blade profile is a modified spearpoint type, with a ¾-length false miter on the back and a lower guard to protect the hand during use. Both the guard and the knob have holes to facilitate the attachment of the knife to various tools or for the passage of straps.
The blade has a surface coating in Carbon-based DLC (Diamond-Like Carbon) making it hyper resistant to abrasion and chemical aggression. Given the heavy use of the instrument, the more performing high-strength G10 is used for the handle instead of the usual Forprene. It is fixed to the FULL TANG profile by two passing screws and maintains all the well-known ergonomic characteristics of Extrema Ratio handles.
Being a knife designed for professional use, great importance has been given to the ease of carrying, accessibility and speed of extraction. The polymer sheath is versatile and can be worn on a service belt or mounted on MOLLE panels of tactical vests, backpacks or other equipment.

• Böhler N690 steel blade
• G10 handle
• Kydex carrying case

Brand: Extrema Ratio
Blade finish: DLC - Diamond Like Carbon
Blade rounding: Flat edge
Blade material: Böhler N690 steel
HRC: 58
Handle material: G10
Total length: 233mm
Blade length: 116mm
Blade thickness: 5mm
Weight 240g
Complete with Kydex sheath