Metal parts and fittings for motors and engines, for use in machines, namely, exhaust spark arrestors and alternators; diesel fuel injection modules for engines; valves; air valves, being engine parts for introducing fuel-air mixtures into the combustion chambers of internal combustion engines; valve controllers being parts of machines; valves as machine components, namely, safety valves, inlet and exhaust valves, and delivery overflow valves; valve gears and valve springs; timing belt pulleys and mechanical pulleys; couplings and transmissions; pumps as parts of machines, motors and engines; fuel pumps for land vehicles; fuel injection pumps for land vehicles and compressed air pumps; fuel injectors and fuel injection parts, namely, fuel injection nozzles and nozzle heat shields; hydraulic and pneumatic control units for fuel injection systems for machines, motors and engines; pistons for internal combustion engines; gearboxes other than for use in land vehicles; transmission equipment, namely, gears for machines, power transmission belts for machines and mechanical power transmitting mechanisms for machines; variable speed drives for machines; power transmission products for machines, namely, belts, couplings, drive pulleys, clutches and gear units; all being for use in machines