Allows you to use a CO2 tank (CGA-320) with and Argon flowmeter. The adapter includes a nylon washer to seal the adapter to the CO2 tank. Simply screw the adapter onto the male fitting on your CO2 tank, and then screw the flowmeter into the opposite end of the adapter. Tanks and flowmeters not included.
Works great if you don’t have a dedicated CO2 regulator.