Aqua lung big squeeze drop point knife has a patented secure locking system that releases with natural 'squeeze' of the handle. The blade is constructed from a 304 stainless steel material. The dive knife blade is 4.5 inches long with an overall length of 9.5 inches. This scubaes standard with two mounting options: rubber leg straps (included) and molded belt clip on sheath. Choose from several color options and a point tip for this scuba knife.