... density or hardness,adjust by changing the pcs of pads in each Flap wheel,and can also increase the hardness ... PURPOSEFOR IRREGULAR METAL WARE,DIECASTING,PLASTIC,LACQUER,WOOD.USED EXTENSIVELY IN MANUAL,SEMI_AUTOMATIC AND AUTOMATIC MACHINES.FOR FINE AND NON_STREAK ... WIDE RANGE OF NON_WOVEN NYLON FIBRE FABRICS,IN ALUMINIUM OXIDE OR SILICONE CARBIDE,AND IN VARIOUS GRAINS AND DIMENSIONS.THEY CAN BE ...