Fiber Disc, Abrasive Type Coated, Abrasive Material Ceramic, Backing Material Fiber, Backing Weight Not Rated, Grit 36, Overall Diameter 4 1/2 in, Series 982CX, Maximum Operating Speed 13,300 RPM, Resistance Properties Tear, Connector Size 5/8 In.-11, Connector Type GL, Color Purple, Grade Extra Coarse, Package Quantity 25