DMT Diamond Whetstones! Hone any hard material, steel, ceramic, glass or stone with one of these DMT Diamond Whetstones. A thin layer of perforated steel is molded into a plastic base. The metal is covered with diamonds of precision size, embedded in nickel. The unique pattern of plastic islands in a sea of diamonds speeds sharpening. Use only water for lubrication. Wipe clean. 6 x 2 x 3/4" Order yours today! AVAILABLE SEPARATELY: DMT Diamond Whetstone, Coarse 325 grits; DMT Diamond Whetstone, Fine 600 grits - word search in our Store for "DMT". DMT Diamond Whetstone, Extra fine 1,200 grits