Quick Change Disc, Abrasive Type Coated, Disc Attachment System TR Roll-On/Off, Disc Attachment Type Type 3, Disc Diameter 3 in, Abrasive Grit 60, Abrasive Grade Coarse, Abrasive Material Aluminum Oxide, Disc Backing Material Cloth, Max. RPM 20, 000 RPM, Series 361F, Backing Weight YY, Color Brown, Package Quantity 50