The Blue Tang Hydralloy by Underwater Kinetics is a reliable, multi-functional dive knife made with their patented Hydralloy steel. This special steel alloy combines strength with rust resistance, giving you a durable, long-lasting blade. The 5-inch (12.7 cm) blade features a serrated edge, a straight edge, and a hooked line cutter, making it ideal for cutting rope and line. The knife also has a pommel end cap that can be used as a tank banger for signaling. The ergonomic rubber handle, extended thumb guard, and drop point tip offer a comfortable, secure grip. The quick-release sheath has a locking mechanism to keep the knife safely in place, and the included leg straps make it easy to carry.