7 Gear boxes, gears and gear sets other than for land vehicles; machine parts, namely, worm gears, mechanical speed reducers, double enveloping worms and gears; power transmissions and gearing for machines; servo gear heads other than for land vehicles; motors other than for land vehicles; electric motors other than for land vehicles; motors, gears, bearings, wheel drive gear boxes, and drives for orientating solar panels, utility vehicle booms, aerial work platforms, and machines; torque limiters and brakes for machines; machine parts, namely, mechanical couplings, flexible couplings, fluid drive couplings; machines for cutting gears; structural parts and fittings for the aforesaid goods