High-speed sanding and finishing of flat surfaces on wood, plastic and fiberglass as well as removing surface imperfections and leveling depressions. Fine grit belts are ideal for final sanding of surfaces prior to painting or applying stain. Medium grit belts for moderate removal of surface imperfections, light paint, varnish or rust. Coarse grit belts for heavy sanding and stripping on flat surfaces of wood, plastic and fiberglass.