Air filters for mechanical purposes; Bits for power drills; Chain saws; Clutches, other than for land vehicles; Cylinders for machines; Electric chaff-cutters; Filters for cleaning cooling air, for engines; Freewheels, other than for land vehicles; Internal combustion engine parts, namely, pistons; Lawn mowers; Mufflers for motors and engines; Pistons for engines; Sparking plugs for internal combustion engines; Vehicle parts, namely, carburetors