This Farberware Knife Block features EdgeKeeper Technology that automatically sharpens the straight-edge knives with every use. Built-in ceramic sharpeners hone the blades whenever they are removed from the block and replaced, ensuring your knives are at peak sharpness every time you use them. Ceramic sharpeners are less abrasive than alternative materials and will gently sharpen knives resulting in a finer edge. This not only saves you time but is a safer, more efficient way to sharpen your knives 13-piece set includes an 8-inch chef knife, an 8-inch slicing knife, a 5-inch chef knife with kullens, a 5-1/2 inch serrated utility knife, a 3-1/2 inch paring knife, six 4-1/2 inch steak knives, all-purpose shears, and a black rubberwood storage block. Hand-wash knives with warm water and a mild detergent then rinse and dry immediately.