The Assorted Replacement Belt Accessory Kit by Work Sharp includes two P80 coarse grit abrasive belts, two P220 medium grit abrasive belts, and two 6000 fine grit abrasive belts. These abrasive belts are direct replacements for the abrasive belts that come standard with the Original Knife & Tool Sharpener (WSKTS). Keep your sharpener at the height of performance with the green P80 aluminum oxide, red P220 ceramic oxide, and grey 6000 silicon carbide belts. The P80 and P220 belts have a waterproof polyester backing, while the 6000 belt has a flexible cotton backing with polymer emulsion cushioning layer. P80: 201 microns. P220: 68 microns. 6000: 4 microns. Size: 1/2" x 12".