Our #1500 Grit Orange Shapton Professional Ceramic Water Stone is designed for professional use. It will very rapidly remove scratches from coarser stones and establish a wire edge (burr). The stone is fired at a high temperature with a mixture of medium coarse #1500 abrasive and a clay binder. Unlike other water stones, it does not need to be soaked prior to use. Simply add water to the surface and start sharpening. It is 8-1/4" x 2-3/4" x 5/8" and is shipped in a plastic storage case that can be used as a stone holder while sharpening. The case has rubber feet help prevent slippage.