Disc with a diameter of 37 cm and grain P40 without holes, Velcro fastened, without suction holes for a vacuum cleaner. Used in grinders; EIBENSTOCK EWS400, EPG400, DEDRA DED7767, STRONG 700F and others with a 37 cm diameter mounting plate. For grinding min. polystyrene, wool and other boards used in facade insulation systems.