Fiber Disc Abrasive Type Coated Abrasive Material Ceramic Backing Material Fiber Backing Weight X Grit 24 Overall Diameter 4 1/2 in Series Blaze AVOS F980 Coating Coverage Closed Maximum Operating Speed 13 000 RPM Resistance Properties Tear Connector Size 7/8 in Connector Type GL Color Orange Features Self-Lubricating Grinding Aid Grade Extra Coarse