The Sting Ray Dive Knife from United Cutlery is constructed of one piece of solid, black-coated AUS-6 stainless steel. The dagger blade features double edges with one partially serrated side and black finish. The slotted handle offers a secure grip with a lightweight feel. Includes an ABS sheath with a quick-release mechanism for fast, easy accessibility in life-threatening situations. A water drain hole allows excess water to drain off the knife to quickly prevent corrosion. The sheath can be worn with rubber arm/leg straps or on a belt.