7 MACHINE COUPLINGS AND BELTING; PARTS OF MACHINES, NAMELY, CLUTCHES, BRAKES, CLUTCH PLATES, CLUTCH FACINGS AND LINERS, PISTON AND CYLINDER UNITS FOR BRAKES AND CLUTCHES, DRUM BRAKE LININGS, DISC BRAKE PADS, BRAKE DRUMS AND DISCS, BRAKE SHOES, BRAKE CALIPERS AND BEARINGS; AND ELECTRIC MOTOR, GENERATORS, DYNAMOS AND ALTERNATORS