The Hammerhead Ulna Dive Knife is a compact ultra light weight knife that is made to be worn on the arm or any where on the body. The Ulna is made from stainless steel with a hardness of a 55-56HRC. This knife is very low profile and worn close to the body, avoiding line traps and minimizing drag.
Great size! Trust hammerhead to come up with the best knife to be used while spear fishing or Incase of entanglement. Awesome look too!