electric glue guns; air spray guns in the nature of power-operated blowers; power-operated spray guns; tire chucks for power drills; industrial robots; drilling machines in the nature of drilling presses; hydraulic riveters; compressed air pumps; gear boxes other than for land vehicles; motors other than for land vehicles; generators for land vehicles; motor starters; electric cutting machines; electric screwdrivers; electric drills; machine tools, namely, magnetic vices for use in the precision clamping of work pieces; oxygen-fueled torches for use in cutting or welding; parts for motors or engines, namely, bare compressors, air pressure tanks, flywheel pulleys, connector rods, crankcases, thrust bearing seats, pistons, piston rings, cylinders, cylinder heads, vacuum pumps; pneumatic power tools, namely, tire inflation devices, grinders, sanders, riveters, compressors, screwdrivers, hammers, chipping hammers