"You can sand with less effort and less hand fatigue using 3M Pro Grade Faster sanding sheets and 3M Sandblaster Pro sanding sheets with NO-SLIP GRIP backing and premium mineral technology. These sheets are designed to last long, resist loading, have a durable tear-resistant backing and cover more surface area with better control. Sand by hand, on a sanding block or cut to size for use on a power tool sander. The clog-resistant coating has a long life and can be used on WET or DRY surfaces. These commercial sanding sheets are ideal for a variety of surfaces including drywall and drywall joints, patching compounds and plaster, wood, metal, plastic and painted surfaces. For best sanding results, sand with the grain of the wood through a sequence of grits, from coarse to extra fine, skipping no more than one grit between sanding steps. The colored abrasive will NOT discolor the surface you are sanding.