Zwilling JA Henckels Four Star 9-Piece Knife Set with Block Easy Care- Four Star knives feature handles made of high impact polypropylene. They are dishwasher safe, sanitary, brek-proof and colorfast. Perfect Balance - Balance is crucial in using a knife. Sigamforge 1 pc forged construction knives are manufactured by an imporved process that achieves a perfect level of balance, thus improving cutting performance. Sturdy- Four Star knives are FRIODUR ice hardened , featuring high carbon, no-stain steel blades for a sharp long-lasting cutting edge. The full rat tail tang, which extends into the handle, provide proper balance. Dishwasher safe but hand washing recommended for all fine cutlery