Corrugated metal tubing; metal hardware, namely, quick disconnect couplings and valved quick disconnect couplings for use with fluid conveyance in appliances and equipment; quick disconnect couplings and valved quick disconnect couplings made of metal for use with gas appliances; manually operated metal ball valves; metal fittings, namely, swivel fittings, elbows, [ caps, ] threaded couplers, bushings, [ flare fittings, ] male connectors and female connectors; metal corrugated hoses for gas a...