Aqua lung big squeeze blunt tip knife has a patented secure locking system that releases with a natural 'squeeze' of the handle. This dive knife can be mounted with leg straps (included) or a belt clip on a sheath. The blade is constructed from a 304 stainless steel material and is 4.5 inches long. The overall length is 9.5 inches. This knife is available in several colors with a blunt tip.