Extrema Ratio Ultramarine [04.1000.0320/BLK]

Extrema Ratio Ultramarine [04.1000.0320/BLK]

The Ultramarine by Extrema Ratio is a high end dive knife crafted for elite military service. The thick Bohler N690 stainless steel blade is coated with a Mil-C-13924 finish for a non-reflective, corrosion resistant finish. The dagger blade features partial serrations and an integrated strap cutter. Nylon wrapped handle provides a slip resistant grip. Included is scuba ankle sheath for ease of access.

5.63" (14.3cm) black matte finish Bohler N690 stainless blade. Partially serrated top edge with line cutter. Handle may be disassembled so blade may be attached to pole or spear. Black ABS and nylon belt sheath with arm/leg straps.

Key features

• Overall length: 11.625"
• Blade length: 5.875"
• Blade steel: Bohler N690
• Blade style: Dagger
• Finish: Black
• Edge type: Serrated
• Blade thickness: 0.25"
• Hardness: 58 RC
• Handle: Nylon
• Weight: 13.90 oz.
• Origin: Italy
• Sheath / carry system as specified

Specifications