CO2 Refill Adapter, W21.8-14 // TR21-4 Thread Soda Hoese Connection Bottle Connector Air Regulator CO2 Pump Systems High Pressure Prooof Aluminum

All good so far. For the price. It came without any instructions, so you will need to do some research on how to use it. The washers are kind of hard splastic. I was exepcting them to be more rubbery. You will need a wrench to tighten the connecter to the big tank. Just by hand, it will not be enough and gas will bleed via the bleed hole. The metal parts seem thin and light ... I hope they will last. But what can you expect for this price :)

Works perfectly for refilling sodastream cylinders, decanting from big CO2 bottle.