Super Sander - A revolutionary system for sanding that virtually lasts forever. The tungsten carbide sanding surface will not tear or wear out like sandpaper, and the lightweight plastic design greatly reduces hand fatigue. Use on a variety of surfaces. Sands almost anything - woods, metals, plastics, foam, fiberglass, drywall, Corian, tile, and even bricks. Jerry uses this medium grit sander to lightly sand the surface of his canvases to knock down rough spots -- giving them a more blendable surface.