This DMT 8" DuoSharp Bench Stone, is an excellent bench and counter sharpener, with a wider and larger diamond surface for sharpening a variety of edges. This model comes with a Bench Stone Base Accessory. HC Extra-Fine diamond (9 micron /1200 mesh) to polish and refine a razor edge after sharpening with a coarser diamond; HC Fine diamond (25 micron / 600 mesh) for a razor sharp edge. Innovative, multi-patented DuoSharp Bench Stone is a precision flat, two diamond surfaced sharpener guaranteed to provide consistent, even sharpening every time. Now offered with Hardcoat surface for extra durability when used specifically for the hardest steels and ceramic blades. Designed to withstand the rigors of sharpening ceramic knives.