Need to connect a CO2 tank to an argon regulator? This brass CGA-320 to CGA-580 adapter has you covered. It's solid, well-made, and designed to seal tight so you don't have to worry about annoying gas leaks. The threads are standard and fit securely, and it comes with a nylon washer to help reduce pressure and protect the adapter. Made from high-quality brass, it's built to resist corrosion and handle heat, so it'll last through plenty of use. Whether you're welding, brewing, or working with gas setups, this little adapter makes it easy to link different cylinder types. The whole thing is compact and straightforward – just screw it on between your tank and regulator. Package includes the adapter and one washer. Just a heads-up: double-check your tank and regulator threads before buying to make sure they match CGA-320 and CGA-580. Simple, reliable, and does exactly what you need.