Compressors (machines), power-operated tools, balancers being of the nature of hoists for carrying power-operated tools during use, compressed air blow guns, parts and fittings in this class for all the aforesaid goods; sockets, socket adaptors, extension rods, socket joints, bits, bit holders, bit guides, retaining rings for sockets and for bits, chisels, riveters, screwdrivers, nail drivers, scalers, drills, moil points, spade attachments, rammers, tampers, filters, hoses, hose clips, hose clamps, hose connections, hose adaptors, hose fittings, mufflers (silencers), valves, fluid drainers, hose driers, gauges, regulators, lubricators, pressure reducers, flowmeters, pipe fittings, pipe nipples and pipe couplings, all being parts in this class of compressors and/or power-operated tools; but excluding filling and sealing machines and their components for use in wine cellars, breweries, dairies, manufacturing plant for sweet new wine, mineral springs, manufacturing plant for mineral water and lemonade; and excluding crushers, dryer crushers (in this class), grinding mills and compartment mills for grinding; lifts and separators; and parts therefor; and further excluding equipment for stirring molten metals by the use of gases