Flap Disc Abrasive Type Coated Abrasive Material Ceramic Backing Plate Material Fiberglass Connector Size 7/8 in Connector Type Unthreaded Hole Density Rating Standard Flap Disc Type Type 29 Overall Diameter 5 in Series Blaze R980P Coating Coverage Closed Grit 40 Maximum Operating Speed 12 000 RPM Color Blaze