This is Tektite Rescue Edge Dive Knife Scuba Safety This Super light features: Open Knife Length: 7.28" (18.5 cm) Blade Length: 2.75" (7 cm) Blade Thickness: .098" (2.5 mm) Weight: 2.82 oz. (80 g) Integral shackle key/oxygen wrench Materials: 420HC Stainless Steel Blade Glass-Fiber Nylon Handle. 2022 Tester&';s Choice Award! The NEW Folding version of Tektite&';s award-winning Ocean Edge Res-Q blade. Full Serrated Stainless Cutting edge with hook tip designed for cutting rope, belt, or lines, with an integral shackle key/oxygen wrench slot. Bright red for easy location, and a lanyard hole. Keep it in your pocket just in case!