Function: Allows you to connect the to an external CO2 tank, solving the difficulty of replacing an empty CO2 bottle Wide Range of Applications: Used for connection of 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 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: B-silver Package Contents: 1 x Connect Adapter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement