Flap Disc, Abrasive Type Coated, Abrasive Material Zirconia Alumina, Grade Coarse, Backing Plate Material Phenolic, Connector Size 7/8 in, Connector Type Unthreaded Hole, Density Rating High, Flap Disc Type Type 27, Overall Diameter 7 in, Series Tiger Big Cat HD, Backing Material Phenolic, Backing Weight X, Grit 40, Maximum Operating Speed 8,600 RPM