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 12 OTHER ENGINES AND MOTORS. 84 12 31 PNUEMATIC POWER ENGINES & MOTORS: LINEAR ACTING (CYLINDERS) Commodity Code Description 84 12 31 00 PNUEMATIC POWER ENGINES & MOTORS: LINEAR ACTING (CYLINDERS)