Expect cutting edge performance with DMT's Dia-Sharp 6 continuous diamond sharpening bench stone. For knives, blades and fine tools. Includes non-skid rubber feet. Diamond grit clearly marked on side of stone. Fine Coarse grit. Coarse diamond (45 micron / 325 mesh) to quickly restore a neglected edge. Fine diamond (25 micron / 600 mesh) for a razor sharp edge. Excellent for small contact areas and pointed tools. Sharpens knives faster than conventional stones with DMT's mono crystalline diamond surface. No oil is needed-sharpen dry or with water. Durable construction will provide years of consistent performance and reliable service.