The word "WAZA" means skill or technique in Japanese. The large blade is made of 15 layers of Damascus steel and features a blood groove and black hilt. The knife also includes a Japanese traditional-style wooden scabbard sheath with leather belt loop. Blue Steel: Called "Aogami" in Japan, is made by adding chromium and tungsten to white steel making it more durable with greater edge retention. These knives make a great collectible piece or an everyday work knife.