Made from ultra hard alumina ceramic material Fine grit bench stone is used like a traditional sharpening stone but does not require oil or water Flat surface is ideal for sharpening woodworking tools and all types of knives and can be easily cleaned with household cleanser, a scouring pad and water Its broad, flat surface is ideal for sharpening woodworking tools and all types of knives and can be easily cleaned with household cleanser, a scouring pad, and water. This 2x8 stone comes in a light blue polymer case with non-skid rubber feet. Made in USA. Specifications Brand: Spyderco Manufacturer part #: 302M UPC: 716104640119 Category: Knives › Sharpening Tools Shipping weight: 1.33 lb Country of origin: US Ships fast from GunCycle — free economy shipping on orders $99.99+.