Dynabrade 57550 Diameter Palm-Style Rotary Buffer, 3-Inch 76mm 3" Diameter Buffer, .25 hp, for repair of sanding scratches on clearcoat 3" Diameter, 2,400 RPM. Excellent for buffing and polishing fiberglass, plastics and other materials Includes 50125 rigid 3" backing pad, 90027 Terry Cloth Pad and 90028 Wool Pad