The Extrema Ratio HARPOON F HYDROPHIS CYANOCINCTUS is made from Böhler N690Co steel, heat treated to 58 HRC, offering a balance of edge retention and toughness. It features a plain edge with false serrations on the spine, designed to enhance performance when mounted on a shaft for use as a spear.
The 21 cm (8.27″) blade length is optimized for versatile use. The blade features a black warfare finish with the Geotech Camo pattern, an innovative camouflage created through laser engraving, evolving from the earlier Tiger Tech Camo design.
- Overall Length: 350 mm (13.78″)
- Blade Length: 200 mm (7.87″)
- Blade Thickness: 6.3 mm (0.25″)
- Blade Steel: Böhler N690Co
- Hardness: 58 HRC
- Blade Style: Tanto
- Grind: Saber Grind
- Blade Finish: Geotech Camo (Laser-Etched Camouflage)
- Handle Material: Forprene
- Sheath: Tactical Nylon Sheath
- Weight: 350 g (12.35 oz)
- Origin: Made in Italy
- Type: Tactical / Collection
- Package: Premium Gift Box + Metal Limited Card


















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