The 3M™ Stikit™ Paper Roll 426U is designed for convenience, combining open coat silicon carbide abrasive with a handy adhesive backing ready for quick attachment to a 3M™ Stikit™ Backup Pad (sold separately). The 3M™ Stikit™ Paper Roll 426U makes the discs easy to grab while eliminating the use of disc liners.Designed for use with a random orbital sander, 3M Stikit Paper Dust Free Discs are made of long-lasting aluminum oxide abrasive grains constructed 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 Paper Roll 426U discs well suited for general sanding and finishing applications on a variety of substrates, including paint, primer, wood, metal, plastic, and composites, including fibreglass.