This fine 150 grit paper from Norton is ideal for finish sanding and cleaning of bare surfaces. Made from premium grade aluminum oxide abrasives, these Norton gold sanding discs are resin bonded to a high performance paper backing. The discs are surface treated to resist clogging, and will not transfer color or contaminate surfaces. Hook &; loop backing for speedy and easy disc changes. For use on 5" x 5 hole random orbit sanders. 25 discs per pack. Canada.