Smith's Combination Bench Stone Kit includes a 5" 400 medium grit stone used to set the edge on your knife or tool, and a 4" dual grit that consists of 325 coarse and a 1,000 fine grit stone used to put the final polished edge on your knife or tool. The Medium Stone comes mounted on a sturdy molded plastic base that features a built-in stone storage area in the bottom for 4" stone. A bottle of Premium Honing Solution and a sharpening angle guide are also included.