Quick-Change Sanding Disc, Abrasive Type Coated, Abrasive Material Aluminum Oxide, Backing Material Cotton, Backing Weight X, Coating Coverage Closed, Grade Fine, Grit 150, Overall Diameter 3 in, Quick Change System TS, Series R228, Maximum Operating Speed 20, 000 RPM, Color Brown, Package Quantity 50. This item has been restricted from sale in the following state (s): []