Surface-Conditioning Disc, Abrasive Type Non-Woven, Abrasive Material Aluminum Oxide, Backing Weight Scrim Back, Coating Coverage Open, Grade Medium, Grit Not Applicable, Overall Diameter 4 in, Quick Change System TR, Series ZK, Maximum Operating Speed 10, 000 RPM, Color Maroon. This item has been restricted from sale in the following state (s): []