Section 16 MACHINERY AND MECHANICAL APPLIANCES; ELECTRICAL EQUIPMENT; PARTS THEREOF; SOUND RECORDERS AND REPRODUCERS, TELEVISION IMAGE AND SOUND RECORDERS AND REPRODUCERS AND PARTS AND ACCESSORIES OF SUCH ARTICLES 84 NUCLEAR REACTORS, BOILERS, MACHINERY AND MECHANICAL APPLIANCES; PARTS THEREOF 84 83 AND SHAFT COUPLINGS (INCLUDING UNIVERSAL JOINTS). 84 83 90 MILL CHAIN SPROCKETS FOR ROAD MOTOR VEHICLE ENGINES 84 83 90 11 MILL CHAIN SPROCKETS FOR ROAD MOTOR VEHICLE ENGINES Commodity Code Description 84 83 90 11 000 MILL CHAIN SPROCKETS FOR ROAD MOTOR VEHICLE ENGINES