Ulna Dive Knife

$49.95 49.95


One of Hammerhead's line of knives, including the Cranium, Ulna, Patella, and Ilium. These knives are named after the bone they are meant to be worn closest to. The Ulna, then, is designed to be worn in the arm, but can be worn anywhere on the body.

Hammerhead's proprietary processes create a very sharp, lightweight and durable knife. The blade is constructed from Stainless Steel, with a hardness ofŒ 55-56HRC. The knife is low-profile and designed to be worn close to the body,Œ eliminatingŒ and minimizing drag.

TheŒ Ulna is a minimalist blade, designed with the freediver in mind. Slim, strong and lightweight, the Ulna checks in at a mereŒ 85 g (2.99 oz) and with aŒ 7 cm ( 2.75 oz) blade length, is a serious tool.