H5956 Flap Disc Abrasive Type Coated Abrasive Material Zirconia Alumina Grade Extra Coarse Backing Plate Material Plastic Connector Size 7/8 in Connector Type Unthreaded Hole Density Rating Standard Flap Disc Type Type 27 Overall Diameter 4 1/2 in Series BlueFire R884P Backing Material Cotton Backing Weight Y Coating Coverage Semi-Open Grit P40 Maximum Operating Speed 13 300 RPM Color Blue Features Trimmable