This is a UK Blue Tang Blunt Tip Scuba Diving Knife. It features: Lightweight UK's own HYDRALLOY steel blade for durability and corrosion resistance 5 inch hollow ground double edge blade Incredibly Strong Stainless steel signaling pommel insulated from blade to eliminate metal to metal corrosion Straight edge and serrated edge for all needs Large choil for power grip on blade Single hand insertion and removal from locking sheath Serrated edge for cutting rope and line Hooked edge line cutter cutter Optimal and comfortable grip Ozone resistant quick release knife straps Strap mounting brackets UK durability and strength Quick disassembly for cleaning. No tools required! This UK Blue Tang Blunt Tip Scuba Knife is for the rugged yet safe diver!