Muela-Storm-N Storm Razor Edge Ptfe Friction Resistant Fixed Blade Tactical Flat Knife (Black) Blade Length: 5.5", Handle: 5" Blade Material: 440 Chrome-Vanadium-Molybdenum Alloy Martensitic Steel, Hardness of 54-58 degrees on the Rockwell Scale Manufacturas Muela knives from Joy Enterprises are handcrafted in Argamailla de Calatrava, Ciudad Real, Spain.