3M™ Stikit™ Gold Disc Roll 216U features six holes for dust free sanding. It is intended to handle a wide range of sanding and finishing needs, including sanding and featheredging filler and putties. The high-quality, coated abrasive comes ready to use with a pressure sensitive adhesive coating on the backside so it can conveniently press on to the backup pad. It removes cleanly, leaving an uncontaminated surface for the next disc. 3M™ Stikit™ Discs should be used in conjunction with a 3M™ Stikit™ Backup Pad (sold separately) that is attached to a random orbital sander.