Fiber Disc, Abrasive Type Coated, Abrasive Material Ceramic, Backing Material Fiber, Backing Weight YY, Grit 24, Overall Diameter 4 1/2 in, Series Predator, Coating Coverage Closed, Maximum Operating Speed 11,000 RPM, Resistance Properties Heat, Connector Size 7/8 in, Connector Type Unthreaded Hole, Color Gray, Features Self-Lubricating Grinding Aid, Rigid Backing, Grade Extra Coarse, Package Quantity 25