The Benchtop Bench Stone is an angle guided, 3-sided abrasive sharpening system. Medium and fine grit diamond plates quickly restore a sharp edge, while the fine grit ceramic stone creates an incredibly keen edge on any knife. The innovative Pivot-Response™ System allows the abrasive to follow the curve of the blade - making manual sharpening faster, easier and more precise than ever. Sharpening guides are interchangeable from 20° or 25°and optional to use. Pivot-Response™ feature can be locked out to provide a rigid sharpening surface for a wide range of knife & tool sharpening applications.