Benchmade 112 H20 Fixed Dive Rescue KnifeThe Benchmade 112 H2O Fixed Blade dive knife was originally developed for an elite military program. A fixed black coated blade with blunt tip and integrated rescue hook, this knife features N680 ultra stainless steel, a special application steel for when corrosion resistance is the primary requirement. Ideal for salt water applications, the addition of nitrogen to the alloy gives this the best corrosion resistance of any blade steel, with edge