3M 566A - Conical flap discs provide excellent performance at an economical price. Also available in P120 for finer blending, refining and finishing work. Features and Benefits Flap discs allow one-step grinding and blending, saving time and money Quick change disc simplifies disc changes and does not require hand tools Alumina zirconia self-sharpens, providing extended life and more cutting power than aluminum oxide - vastly reducing replacement costs Typical Applications Weld grinding, stock removal, deburring, deflashing, gate removal, edge chamfering, cleaning, blending, finishing. Technical Information Materials - All metals Mineral - Alumina Zirconia Backing - X-weight cotton cloth on reinforced glass fibre resin Coating - Closed Bond - Resin