Smith's Three Stone Sharpening System features a 6" medium Arkansas Stone, 6" fine Arkansas Stone, and 6" coarse synthetic stone. They are mounted on a molded plastic triangle with handles on the end for easy stone rotation and easy to read stone identification. The base also features non-skid rubber feet. Premium honing oil is included with sharpening system. Smith's sharpeners are just the best on the market. If you want to really keep your bladed tools sharp, you have to have this Three Stone Sharpening System.