Function: Allows you to connect the soda stream to an external CO2 tank, solving the difficulty of replacing an empty CO2 bottle Wide Range of Applications: Used for connection of Soda Stream Terra water maker, large CO2 storage tank and soda machine pink CO2 cylinder system, not suitable for ""blue cylinder connection system"", compatible with most soda machines High-Quality Material: Made of high-quality aluminum, low density, high plasticity, corrosion resistance and oxidation resistance, strong and durable Ingenious Design: Ingenious thread design, can be installed quickly and easily, with strong practicability Easy to Operate: Easy and simple installation, can be directly connected without extra hardware, saving your time Material: aluminum colour: A-gold Package Contents: 1 x Connect Adapter