Aluminium oxide abrasive grain resin bonded to GX51 backing cloth. Overlap joint with extra top-skive for reduced chatter. For sanding wood, paint, varnish, plastics, plasters and metal. Fits all 13 x 457mm file sanders. Includes 1 x 40, 1 x 60, 2 x 80 and 1 x 120 Grit belts.