Check the listing for details. DMT DUO SHARP 8" x 3" Double Side Diamond Sharpener with Base. Condition: New. Listed at 72.95 USD. The DuoSharp Bench Stone is a precision flat, two diamond surfaced sharpener guaranteed to provide consistent, even sharpening every time. Is an excellent counter and bench sharpener, with a larger, wider diamond surface for sharpening a variety of edges and includes the Bench Stone Base AccessoryEasy counter or bench use with larger, wider diamond surface for sharpening a variety of knives and edgesSharpens cutting edges faster than conventional stones with DMT's micronized monocrystalline diamond surfaceNo oil is needed-sharpen dry or with water Model: W8FC-WB features double sided stone with Fine/Course GritsModel: WM8EF-WB features double sided stone with Extra Fine/Fine Grits c