Calphalon Precision 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 are fully forged from high-carbon, no-stain German steel and feature a bolster and full tang for better balance and strength. Steak knives are made from stamped Asian steel. Bar-riveted handles are conveniently labeled on the end for easy identification in the block. Knife sets include a wood block and a full selection of knives for every culinary purpose, whether you're chopping, slicing, mincing or dicing. Designed for precision and resilience, Calphalon Precision Self-Sharpening knives are backed by a full lifetime warranty.