No tools, plug and play, quickly connect and disconnect the CO2 gas cylinder.You can easily get started without complex operation steps, which is convenient for daily use The sealing performance is good, and high -quality sealing materials are used to that there is no leakage during connection and .It is recommended to use a siphon carbon dioxide storage tank with a CGA-320 exit valve, otherwise the water tank need to be inverted.If you freeze a small air cylinder in the refrigerator, it is easier to fill and add more gas in a few hours before filling. Make high -quality aluminum alloy material, which has the characteristics of resistance, rust -proof, high temperature ductility, and low magnetic transparency.It can withstand high pressure, suitable for high -pressure environments, prevent damage caused by over -pressure Connect to a standard large CGA320 CO2 water tank, which is only applicable to the screws in CO2 cans such as Terra, ART, DUO, , E-Terra, Crustal 3.0, and can not be the TR21- such as Fizzi , Jet, and other TR21-4 CO2 cans of soda water machines. The structure is simple, easy to disassemble and clean, maintain a good working state, small size, light weight, easy to carry and store, very convenient. not suitable for CO2 water tank with RPV, residual pressure valve Colour:As Shown Material:Metal Package Contents: 1 set * co2 refill 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 allowed error is +/- 1-3cm.