Fiber Disc, Abrasive Type Non-Woven, Abrasive Material Ceramic, Backing Material Fiber, Backing Weight Y, Grit 60, Overall Diameter 4 1/2 in, Series 782C, Coating Coverage Closed, Maximum Operating Speed 13,300 RPM, Resistance Properties Tear, Connector Size 5/8 In.-11, Connector Type TN, Color Maroon, Grade Coarse