Surface-Conditioning Disc, Abrasive Type Non-Woven, Abrasive Material Aluminum Oxide, Backing Material Polyester, Backing Weight Y, Grade Very Fine, Grit 320, Overall Diameter 3 in, Quick Change System TR, Series Rapid Prep, Maximum Operating Speed 20, 000 RPM, Color Blue. This item has been restricted from sale in the following state (s): []