Aerating pumps for aquaria; Back pressure valves as parts of machines; Bearings for transmission shafts, being parts of machines; Bearings, as parts of machines; Belts for engines; Belts for machines; Brushes being parts of motors, generators and dynamos; Connecting rods for machines, motors and engines; Couplings for machines; Drill chucks for power drills; Drilling machines and parts therefor; Dynamo brushes; Electric motors for machines; Electric motors, and their parts, not for land vehic...