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Extrema Ratio Ultramarine Fixed Blade Knife (5.875" Black)

Out of Stock
MSRP: $791.95
Our Price: $623.00
3,115
Out of Stock
Item #BHQ-46535

4 interest free payments of $155.75* with Sezzle. Learn More
  • Overall Length: 11.625"
  • Blade Length: 5.875"
  • Blade Thickness: 0.25"
  • Blade Material: Bohler N690
  • Hardness: 58 RC
  • Blade Style: Dagger
  • Blade Grind: Flat
  • Finish: Black
  • Edge Type: Serrated
  • Handle Length: 5.75"
  • Handle Material: Nylon
  • Color: Black
  • Weight: 13.90 oz.
  • User: Right Hand, Left Hand
  • Sheath: Nylon
  • Knife Type: Fixed Blade
  • Brand: Extrema Ratio
  • Model: Ultramarine
  • Country of Origin: Italy
  • Best Use: Diving, Tactical
  • Product Type: Knife
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  • Extrema Ratio Ultramarine Fixed Blade Knife (5.875" Black)
  • Extrema Ratio Ultramarine Fixed Blade Knife (5.875" Black)
  • Extrema Ratio Ultramarine Fixed Blade Knife (5.875" Black)

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.

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