H7383 Flap Disc Abrasive Type Coated Abrasive Material Zirconia Alumina Grade Coarse Backing Plate Material Fiberglass Connector Size 7/8 in Connector Type Unthreaded Hole Density Rating Standard Flap Disc Type Type 29 Overall Diameter 6 in Series BlueFire R884P Backing Material Cotton Backing Weight Y Coating Coverage Semi-Open Grit P60 Maximum Operating Speed 10 200 RPM Color Blue