The Blue Reef Deluxe 5" Diving Knife blade is made of titanium with a pointed tip. It is extremely corrosion resistant and has a remarkable cutting edge. The thermoplastic rubber molded handle fits comfortably in gloved and bare hands. The quick-adjust rubber strap on the sheath eliminates the inconvenience of older style manual buckles. The 5" blade is manufactured from Ti6AL-4V Titanium which is completely corrosion resistant has a serrated edge on the top and a straight edge with line cutter on the bottom. The butt cap can be used as a hammer is also made of durable, corrosion free titanium. The sheath has a push-down lock system to secure the knife safely.