This is a heavy professional cutting and polishing pad. The curved edge dissipates heat better and prolongs compound and polish life. Our wool pads are washable and perfectly balanced. Product dimensions are 7.5 inch diameter, 1.5 inch pile height, and a 7/8 inch arbor hole. This pad can be attached as a bolt-on pad or with the convenient hook and loop backing. The 10240 Wool Cutting Pad fits most standard 7 inch hook and loop backing plates.