Aluminium oxide abrasive on a heavy duty flexed backing paper for use on wood pained surfaces plasters and filler a double resin bond means that the grit will not separate from the backing paper no matter how extreme the application the self sharpening grain and non clogging abrasive coating means that liberty green not only lasts longer but will work faster and give a far superior surface finish than other green abrasive papers available the tough flexed backing paper means that it can be used