O.S.

Engines for model vehicles; engines and motors for model aircraft; engines and motors for model helicopters; gasoline engines, not for land vehicles; glow plugs; cylinder head for engines; cylinder liners as parts of machines; pistons for engines; piston rings being engine parts; camshafts; connecting rods for engines; crank shaft; silencers, not for land vehicles; exhaust manifold for engines; gears, other than for land vehicles; ball-bearings; engine bearings; starters for motors and engines; AC motors and DC motors, not including those for land vehicles but including parts for any AC motors and DC motors; AC generators (alternators)