Calphalon Classic Self-Sharpening knives stay sharp for a lifetime. The 15pc cutlery set features SharpIN technology with built-in ceramic sharpeners that automatically sharpen straight edge knives every time you remove them from the block. Knives feature high-carbon, no-stain steel for lasting durability. Handles feature a full-tang design for strength and balance. The triple-riveted handles are contoured for a secure grip. Additionally, knife handles are also labeled for easy identification in the block. The 15pc set includes a wood block and a great selection of essential knives for chopping, dicing, slicing and more, as well as eight steak knives. Calphalon Classic Self-Sharpening knives have a full lifetime warranty. Designated Chemical Disclosure: This product contains Stainless Steel (Iron, Chromium, Manganese, Nickel, Phosphorus).