Fiber Disc, Abrasive Type Coated, Abrasive Material Ceramic, Backing Material Fiber, Grit 36, Overall Diameter 4 in, Series Cubitron 1182C, Coating Coverage Open, Maximum Operating Speed 15,000 RPM, Resistance Properties Tear, Connector Size 5/8 in, Connector Type Unthreaded Hole, Color Purple, Grade Coarse