The Calphalon Precision Space-saving Self-sharpening 10-pc. Knife Block Set maximizes counter top space while keeping your knives within easy reach. Made from walnut-stained hardwood, this slender block design features SharpIN Technology with built-in sharpeners to keep knives performing at their best every time. Knives are crafted from durable steel with a fully forged blade, bolster and tang. Each knife handle is labeled for quick identification in the knife block. With an assortment of knives in this set, it's easy to prep your favorite meal. Hand wash only.