Air powered tools, namely, drills, screwdrivers, rivet hammers, saws; angle valves being parts of machines; back pressure valves as parts of machines; drill chucks for power drills; gas-operated blow torches; machine parts, namely, bearings and bushings; machine parts, namely, blades; machine parts, namely, grindstones; machine parts, namely, nozzles which are parts of power-operated sprayers; machine parts, namely, roller bearings; metal clamps used for holding piece parts on machine tool ta...