Get exceptional sanding capability with these Sia(TM) sanding discs. These abrasive sanding sheets are made with aluminum oxide resin paper for lasting use. They are a great choice for use on wood, metal, drywall, fibreglass, sanding projects. The sand paper discs feature an 8-hole design that helps with dust removal and have a 60 grit for coarse sanding applications. They are self-sticking for easy installation and removal on your sander. The package contains four sanding discs.