Trade quality general purpose aluminium oxide for hand or machine sanding of wood, paint, plaster, fillers, metal and more Resin-over-resin bonded abrasive lasts up to 10 times longer than sandpaper and other silicon carbide abrasives and gives an ultra smooth, even surface ready for painting, priming, staining or varnishing Crack resistant backing paper that is easily cut to size and can handle curved, moulded and irregular surfaces without falling apart 40 grit Extra Coarse grade for the toughest jobs, such as stripping very rough surfaces or built-up surfaces with or several layers of paint or varnish 5m roll length x 115mm width ideal for machine/electric sanders and hand/manual sanders