Lansky Tri-Stone Diamond Bench Stone

"Lansky delivers the most versatile 3 Stone Sharpener available, Combining 3 of our best stones: Diamond, Alumina-Oxide, and Ceramic. The result is a stand-alone, high-value sharpening center that will do it all, with better versatility than other similar products and last longer doing it. All sharpening surfaces measure 2"" x 6""."