7 Parts of vehicles and vehicle trailers, namely, engine starters; driving chains in the nature of transmission chains, other than for land vehicles; power transmission drive shafts, except for land vehicles; exhaust manifolds for engines, mufflers for engines, gaskets for internal combustion engines, torque converters except for land vehicles; valves being parts of machines in the nature of pressure valves, fuel injectors for engines, filters, namely oil and gas filters for motors and engines, gears, namely, gear boxes, except for land vehicles; cardan joints for machines, cardan fittings for power-operated lifting equipment, internal combustion engine parts, namely, pistons and pistons for internal combustion engines; piston rings, compressors for machines, ball bearings for vehicle axles, drive shafts and power transmission shafts, ball rings for bearings for vehicle axles, drive shafts and power transmission shafts, crank cases for machines, motors and engines, crank shafts for engines, machine parts, namely, bearings; bearing brackets for machines, journal boxes, air filters for engines, connecting rods for machines and engines, chucks for power drills, starters for machine motors, shock absorbers for machines, transmission belts for engines other than for land vehicles, power transmission gearing for machines, transmission reduction gears for machines, power transmission appliances in the nature of power transmission belts for machines, shaft couplings for machines, windlasses, power-operated lifting jacks, journal bearings in the nature of journal boxes, cylinder heads for engines, as well as structural parts for the aforesaid goods