Fast cutting abrasive for precise, uniform, close-tolerance finish. High-strength polyester film backing resin-bonded for durability. For metal, plastic, paint spot repair, automotive power train components, roll superfinishing. An aluminum oxide micron roll resin bonded to a 5 mil polyester film backing. The backing has a friction grip coating for slip resistance. Precision finishing of cylindrical surfaces such as automotive camshafts & crankshafts.