Muela-7221-P Canguros Tactical Kangaroo Knife (Pack of Two) Dual Knife Set 13" and 7.75" Overall Lengths 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.