Flap Disc, Abrasive Type Coated, Abrasive Material Zirconia Alumina, Grade Coarse, Backing Plate Material Fiberglass, Connector Size 5/8 In. -11, Connector Type Threaded Hole, Density Rating High, Flap Disc Type Radial, Overall Diameter 4 1/2 in, Series Z SGP CURVE, Backing Material Fiberglass, Backing Weight Consumable, Grit 40, Maximum Operating Speed 13, 300 RPM. This item has been restricted from sale in the following state (s): []