Lansky D-SHARP Quad-Angle Sharpener The latest addition to the SHARP line, the all-new D-Sharp features four sharpening angles (17, 20, 25 and 30) in 600 grit diamond. It also has a fine ceramic benchstone that can be used for polishing straight or serrated blades. Perfect as a Lansky System accessory, or as a stand alone sharpening solution. 4 Sharpening angles. 17, 20, 25 and 30 Ceramic benchstone for fine polishing and serrations 600 grit medium diamound pull-through slots 800 grit ceramic serrated mini-benchstone Durable metal casing 100% compatible with all Lansky Controlled-Angel Systems and Turn Boxes Manufacturer: Lansky Model: DSHARP SKU: SI_4019717