Abrasive accessories support the use of sandpaper, surface-conditioning pads, flap wheels, and other abrasives that smooth and finish metal, wood, composites, and concrete and stone. Backing pads install on a rotary tool to support sanding and surface-conditioning discs. Mandrels and arbors secure discs, wheels, and cups to the rotary tool. Expanding drums hold abrasive spiral bands on compatible drum sanders and rotary tools. Sanding blocks grip and stabilize sandpaper to make hand sanding easier.