J7232 Flap Disc Abrasive Type Coated Abrasive Material Zirconia Alumina Grade Medium Backing Plate Material Fiberglass Connector Size 5/8 in Connector Type Unthreaded Hole Density Rating Standard Flap Disc Type Type 27 Overall Diameter 4 in Series XC1176 Backing Material Cloth Backing Weight X Grit 60 Maximum Operating Speed 15 300 RPM