USA made 8 in. Duo Sharp plus Bench Stone with Base in extra-fine and fine diamond has a sharpening surface of 8 in. x 2-5/8 in. x 3/8 in. featuring DMT's signature polka dot surface and a convenient continuous diamond zone that makes easy work out of small or pointed tools. The large diamond surface sharpens virtually any knife or edged tool, including kitchen knives, wood carving tools, hunting knives, chisels and much more. Easy to use, you can forget the messy oils that are required with other sharpeners; the diamond surface allows you to sharpen dry or with water. This innovative, multi-patented stone in a convenient dual-sided design is engineered precision flat, essential in assuring even sharpening and will remain flat, unlike water stones. DMT employs a proprietary process resulting in a micronized monocrystalline diamond that covers evenly across the stone for a hardwearing surface guaranteed to provide consistent, efficient sharpening for years to come. Enjoy faster sharpening: 5 or 6 strokes per edge versus 30 on a conventional abrasive. This allows you to spend less time sharpening edges and more time using them. Sharpen with fine (25 micron/600 mesh) for a keen edge and finish with extra-fine (9 micron/1200 mesh) to achieve a refined edge. The bench stone may be used alone, but the bench stone base provides 2 in. knuckle clearance, rubber feet to secure the base and a convenient handle on the underside for moving the stone over a large work piece.