This is the Aqua Lung Argonaut TI Titanium Dive Knife Features: Blade and Handle are made of 4mm thick, high rust resistant Titanium. The handle is double wrapped in 5mm paracord. The blade comes in 2 styles, Spartan and Blunt. The blade is 4 7/8 (12.38cm) long and the handle is 4 7/8" (12.38cm) The butt of the handle comes to a point for hammering, braking and crushing. The sheath is a locking 2mm thick Kydex with 1/8" grommets. The strap holes are 1" (2.5cm) long and 1/4" (.65cm) wide. Comes with 2 rubber leg straps. The Argonaut Dive knives are designed to be one of our best and toughest knives. The butt, handle, hilt and blade are all fashioned out of one piece of 4mm thick titanium. Then coated in black EDP, sharpened and laser etched. The handle is then wrapped, twice, in 5mm paracord and tied off with a 5" (12.7cm) leash. 2mm thick Kydex plastic is then heated and thermoformed around the knife to make the sheath. 1/8" (3.2mm) grommets are inserted and the excess material is removed with a heat knife. The final stage is laser etching a subtle Aqua Lung logo on one side of the sheath. "