Muela-25-10 Easy Grip Rubber Handle Razor Edge Fixed Blade Knife (Leather Sheath) Blade Length: 4", Handle: 4" 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.