Innovative, multi-patented DuoSharp Bench Stone is a precision flat, 2 diamond surfaced sharpener guaranteed to provide consistent, even sharpening every time. The 10 in. counter or bench sharpener offers larger, wider diamond surface for sharpening a variety of edges including shears, cleaver and specialty knives, plane sole, machete, etc. This model comes with the Bench Stone Base Accessory. Coarse diamond stone (45 micron / 325 mesh) to quickly restore a neglected edge; Extra-Coarse diamond (60 micron / 220) when significant removal of material is needed for damaged edges. Sharpening with diamonds is fast and easy. No messy oils needed sharpen dry or with water. Durable construction will provide years of consistent performance and reliable service. For proper tool maintenance, woodworkers, chefs and other professionals rely on the superior quality and versatility of DMT products.