3M's Regalite Polycut Resin Bond Cloth Discs incorporate 3M Cubitron and premium aluminum oxide minerals on a heavy YF cloth backing. Roloc™ discs provide a fast, efficient method for deburring, blending, finishing, removing tool marks and die polishing on all types of metals. They lock securely in place with just a half twist and it's off. Ideal for use on air tools (right angle and straight) and on flexible shaft grinders