Check the listing for details. Kasumi Multiple Sharpener with Whetstone MSRP $140. Color: Black, Condition: New. Listed at 119.99 USD. The Kasumi Multi Sharpener enables you to sharpen various kinds of blades, including ceramic knives. This tool features a twin-sharpener and water stone, along with a new suspension spring system that adjusts for smoother sharpening. Use its diamond or ceramic wheels to sharpen a variety of knife blades. Then, use the compact water stone for finishing after sharpening. The result is a knife as sharp and precise as it was when it entered your collection. Quickly and efficiently sharpen metal or ceramic knife bladesIncludes water stone, ceramic wheel and diamond wheelWater stone features a surface grit of #1000 for final finishing after sharpeningCeramic wheel sharpener’s #320 grit is suitable for stainless steel blades sharpened on both sidesDiamond wheel sharpener’s #1000 grit is for harder steel and ceramic blades on one side only Manufacturer: KasumiMaterial: Plastic, ceramicDimensions: 7.5" L x 1.75" W x 1.75" HWeight: .45 lb.Warranty: Limited lifetimeMade in Japan