Finishing Flap Brush, Abrasive Material Aluminum Oxide, Abrasive Type Non-Woven, Backing Material Not Applicable, Backing Weight Not Applicable, Connector Size 3 in, Connector Type Unthreaded Hole, Grit Not Applicable, Series CF-FB, Flap Width 2 in, Maximum Operating Speed 3,200 RPM, Overall Diameter 8 in, Grade Fine