DMT DuoSharp with Base DM. This Sharpener from DMT uses two interrupted surfaces of superior diamond to provide two-stage sharpening with fast clean and consistent results every time. For a superb way to make sure your knife is is ready for action choose the DMT DuoSharp with Base. Specifications for DMT DuoSharp with Base: Manufacturer: DMT Handle Material: Rubber Blade Material: Rubber Features of DMT DuoSharp with Base: Extra-Fine diamond (9 micron / 1200 mesh) to polish and refine a razor edge after sharpening with a coarser diamond - Fine diamond stone (25 micron / 600 mesh) for a razor sharp edge Easy counter or bench use Larger wider diamond surface for sharpening a variety of knives and edges. Sharpens knives faster than conventional stones with DMT's monocrystalline diamond surface No oil is needed-sharpen dry or with water Durable construction will provide years of consistent performance and reliable service Package Contents: DMT DuoSharp with Base DMT DMWM8EF-WB: DuoSharp with Base