Lansky Double-Sided Diamond Folding Paddles offer two full surface diamond sharpeners in one compact unit, a coarse grit for sharpening or resetting dull edges amd a fine grit for finishing. Both double-sided models have the same folding convenience and rubber over-molded handles and are the same size as our single-side folding diamond paddles. (3.625'x 0.8125'/9.2 x 2.1cm)