Hercules® abrasive cloth, waterproof, 1-1/2 in roll W, 75 ft roll L, 120 grit, aluminum oxide abrasive, sandcloth backing. Oatey® 45030 Hercules® Waterproof Abrasive Cloth, 75 ft L x 1-1/2 in W, 120 Grit, Aluminum Oxide Abrasive