Flap Disc, Abrasive Type Coated, Abrasive Material Zirconia Alumina, Grade Medium, Backing Plate Material Phenolic, Connector Size 5/8 In. -11, Connector Type Threaded Hole, Density Rating High, Flap Disc Type Type 27, Overall Diameter 4 1/2 in, Quick Change System Not Applicable, Series Tiger Paw HD, Backing Material Phenolic, Grit 80, Maximum Operating Speed 12, 000 RPM. This item has been restricted from sale in the following state (s): []