I bought this to upgrade my Soda Machine to use larger CO2 bottles because they are much cheaper per Litre of CO2. The hose was a bit difficult to attach into my machine but after some jiggery pokery drilling holes and reaching deep to screw it in, it was installed. Didn't have to worry about soda gas bottles for months. BUT now the big bottle has run out and refills are NOT AVAILABLE!! So sad. Was this "upgrade" a complete waste of time??