Born from the water, the 112 H2O was originally developed for an elite military program. This H2O dive knife offers great corrosion resistance, cutting ability and edge retention. About the N680 Blade A chromium-molybdenum conventionally produced stainless steel with the addition of vanadium and nitrogen. Excellent corrosion resistance properties, especially in saltwater. Good hardenability and high obtainable hardness. High wear resistance and ability to preserve keenness.