Function: Allows you to connect the soda stream to an external CO2 tank, solving the difficulty of replacing an empty CO2 cylinder Wide range of applications: Used for connecting Terra watermaker, large CO2 storage tank and pink CO2 cylinder system for soda machine, 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 and oxidation resistance, strong and Ingenious: Ingenious thread design, can be installed quickly and easily, with high practicability Easy to use: Easy and simple installation, can be directly connected without additional hardware, saving you time Material: Aluminum Color: B-Silver Package Contents: 1 x Connection 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 a little different from the real thing. The measurement allowed error is +/