The 3M™ Stikit™ gold paper disc roll 216U is designed for convenience, combining open coat aluminum oxide discs with a handy adhesive backing ready for quick attachment to a Stikit™ backup pad (sold separately). Our disc roll makes the discs easy to grab while eliminating the use of disc liners. Designed for use with a random orbital sander, our discs are made of long-lasting aluminum oxide abrasive grains on a light A weight paper backing suitable for lightweight sanding and finishing. The open coat and load-resistant coating help prevent loading for a longer service life and make 3M™ Stikit™ gold paper disc roll 216U discs well-suited for general sanding and finishing applications on a variety of substrates, including paint, primer, wood, metal, plastic and composites, including fiberglass. 3M™ Stikit™ discs are designed to handle a wide range of sanding and finishing needs. These high quality, coated abrasive products come ready to use with a pressure sensitive adhesive coating on the backside so they conveniently press on to the backup pad and remove cleanly, leaving an uncontaminated surface for the next disc. A Stikit™ disc should be used in conjunction with a Stikit™ backup pad (also called a disc pad and sold separately) that is attached to a random orbital sander.