The AccuSharp 3-Stone knife sharpening system allows you to easily sharpen and hone any straight-edge blade with ease. The three stone surfaces include coares diamond, medium alumina-oxide and fine ceramic. Provides extra durability and safety on any surface with a rubber grip base which prevents sliding while sharpening and honing your knives. The base can be mounted to most countertops for extra stability. Also included is an angle guide to assist in maintaining a consistent angle while sharpening.