Flap Disc, Abrasive Type Coated, Abrasive Material Zirconia Alumina, Grade Medium, Backing Plate Material Phenolic, Connector Size 5/8 In.-11, Connector Type Threaded Hole, Flap Disc Type Type 29, Overall Diameter 7 in, Series Tiger X, Backing Material Cloth, Backing Weight X, Grit 80, Maximum Operating Speed 8,600 RPM