Smith's 6" x 2.5" Diamond Bench Stone-Coarse features multiple layers of micron-sized monocrystalline diamonds bonded in nickel to a flat metal surface. The unique overlapping oval hole design speeds sharpening by collecting and holding the metal filings which ordinarily build up during the sharpening process. This allows the sharpening surface to remain clean and clear and speeds sharpening. This stone is excellent for sharpening side woodworking tools, medium to small sport/utility knives, or kitchen knives. It also features a micro-tool sharpening pad for fish hooks and pointed tools. Smith's DBSC 6", Coarse / 325 grit Diamond Bench Stone is a quick cutting general purpose sharpening stone that will be appreciated by woodworkers, culinary enthusiasts, hunters, fisherman and craftsmen. Monocrystalline diamond on a unique interrupted surface speeds abrasive action and remains clear and efficient. A "Micro Tool Sharpening Pad" allows for sharpening very small cutting edges and knife points. The stable 2-1/2" width stone is held in a non-skid base that includes a snap-on clear storage lid. Diamond stones are fast, always remain flat, are indestructable and require only water as a lubricant. For more than 100 years Smith's has been in the knife and tool sharpening business. We pride ourselves on our industry reputation as The Edge Experts and today offer a full line of easy-to-use sharpeners from all five major sharpening categories: 100% Natural Arkansas Stones, Diamonds, Ceramics, Bonded Abrasives and Carbides. Smith's offers its customers the best performing sharpeners in the category at the best price.