Non-Woven Depressed Center Disc, Abrasive Material Silicon Carbide, Grade Extra Coarse, Overall Diameter 7 in, Series XO-DC, Maximum Operating Speed 8,600 RPM, Connector Size 7/8 in, Connector Type Unthreaded Hole, Abrasive Type Non-Woven, Backing Material Nylon Mesh, Color Purple, Disc Shape Type Type 27, Resistance Properties Load