Scotch-Brite™ Radial Bristle Brush Replacement Discs can be used to refill or expand the width of our Scotch-Brite™ Radial Bristle Brush (adapter sold separately). The molded, flexible bristles are filled with proprietary 3M™ Ceramic Abrasive Grain to provide a high quality finish with minimal pressure. Use the brush to effectively clean, finish, polish and deburr irregular surfaces.