F. Dick 10 in. Dickoron "Dick Duo" Diamond/Ceramic Combination Steel is a great tool to use for quick sharpening when your knife needs a little more attention than normal. This ceramic sides are oval and there are round diamond rods on the opposite sides. 1000 grit Ceramic for finishing and/or basic touch up sharpening, diamond for cutting a new edge. This is a very unique sharpening product to allow you to put either a rough diamond finish or a smoother ceramic finish on your knife. If you have lost your edge through heavy use this tool will allow you to put a new beveled edge to your knife and you can skip the stones or the draw sharpeners. Ceramic is delicate so be sure to care for this tool and store it where it will not be dropped. Made in Germany.