Features 1、Sturdy And Wear Resistant: This CO2 adapter is made of excellent brass and aluminum alloy materials for durability and is designed to ensure smoother working and more durable, reliable performance. 2、Quick And Efficient: With the CO2 quick adapter, it will be easy to insert the bottle, so there is no need to disassemble the base where the 60L CO2 cylinder is located in the soda maker, it's convenient, quick and efficient. 3、Compact And Lightweight: This quick connecting CO2 cylinder adapter is small and lightweight, which makes it very easy and practical to install and replace. 4、Good Compatibility: This universal CO2 adapter has a good compatibility and is compatible with for DUO, for Terra, for Art, no need to remove the cover of the machine. 5、Wide Application: This CO2 soda water bubbler adapter has a wide range of applications and can be used at home, restaurants, stores and more. Specification Item Type: CO2 Quick Adapter Material: Brass, Aluminum Alloy Color: Purple Thread: TR21 4 Thread Purpose: To connect soda cylinders with TR21 4 thread to for DUO, for TERRA, for Art soda machines that use quick connect cylinders, you can continue to use traditional CO2 cylinders with screw valves thanks to this quick adapter. The adapter can be used with almost all 60 L aluminum CO2 cylinders with screw valve from different suppliers. Package List 1 x CO2 Quick Adapter 1 x Gasket