This super sharp Japanese stainless steel knife is made of 440C high carbon Japanese steel, which increases toughness, improves stain resistance and prolongs knife life. The prefect weight balanced full length handle are made of soft TPR which is durable, non-slip, easy to clean, waterproof, bacteria-resist, comfortable and beautiful. Full Tang one piece anti-slip Soft TPR handle design for comfortable grip. This Zhen Premium knife set is packed with nice black handcrafted box. DO NOT chop bone or use knife on hard surface like glass cutting board, tile and granite. Hand-wash your blades with gentle dish soap, rinse clean and towel dry immediately. Hone your blades with a steel or ceramic rod weekly to keep it sharp. Recommend to sharpen your blades with a whetstone at an angle of 15 degrees. 100% satisfaction guarantee.