3M 566A. Flat. Good performance at an economical price. Available in P120 for finer blending, refining and finishing work. Features and Benefits Flap discs allow for one-step grinding and blending, saving both time and cost Alumina zirconia self-sharpens, providing extended life and more cutting power than aluminum oxide - reducing replacement costs Extremely strong, Y-weight polyester-cotton backing provides flexibility and supports fast cut on medium to high pressure grinding and finishing applications Quick change disc simplifies disc changes - does not require hand tools Perfect for sharp edge work and flat finishing Typical Applications Weld grinding, stock removal, deburring, deflashing, edge chamfering, cleaning, blending, finishing Notes Materials - All metals Mineral - Alumina Zirconia Backing - X-weight cotton cloth on reinforced glass fibre resin Coating - Closed Bond - Resin