Quick-Change Sanding Disc, Abrasive Type Coated, Abrasive Material Zirconia Alumina, Backing Material Polyester, Backing Weight Y, Coating Coverage Closed, Grade Coarse, Grit 60, Overall Diameter 1 in, Quick Change System TR, Series BlueFire R860, Maximum Operating Speed 30, 000 RPM, Color Green. This item has been restricted from sale in the following state (s): []