This polishing and buffing kit is designed for use with a 1/4 in., 3/8 in., or 1/2 in. drill for polishing and buffing on nearly any surface. This kit comes with a super soft 6 in. rayon bonnet, 5 in. foam pad and 5 in. foam backing pad with 1/4 in. shank. These pads are washable and reusable.