3M PSA Cloth Discs Pressure sensitive adhesive backing easily adheres to a backup pad or steel platen and allows for clean and fast removal for quick replacement. X-weight, durable cloth backing supports aggressive applications without tearing or edge wear. Aluminum oxide abrasive cuts fast, has a long life, and performs well on many surfaces. Resin bond protects the disc from heat damage. Disc can be used for both wet and dry applications Pack of 1