Flap Disc, Type 27, Disc Diameter 4 1/2 in, Mounting Hole Size 5/8 In. -11, Abrasive Grit 40, Abrasive Grade Coarse, Abrasive Material Zirconia Alumina, Series Tiger X, Backing Weight X, Max. RPM 13, 000 RPM. This item has been restricted from sale in the following state (s): []