[Pruchase Notes] This refill adapter compatible for Terra DUO Art Pink Co2 Cylinder. The quick filling adapte can connect the CO2 tank(must be US standard CGA320, Not suitable for EU standard)with the 60L pink CO2 Cylinder(no thread). Not suitable for threaded blue Cylinder. Please confirm the style before purchasing. [Fast filling and Safety]: This CO2 cylinder filling adapter takes only to fill the pink cylinder. The dial is designed to clearly display the pressure value to safe and reliable operation. With the help of the CO2 cylinder refill adapter, you can reuse your pink CO2 60L cylinder with confidence, and enjoy the pleasure of anytime, anywhere. [Easy to install]: First, screw this CO2 tank refill adapter onto the CO2 tank and tighten it with a wrench. Then push the pink 60L CO2 cylinder into the adapter's bayonet. Open the valve of the CO2 tank and wait about for the pink cylinder to fill up. Close the valve of the CO2 tank, open the release valve and take out the small pink CO2 cylinder. [Cautions]: Because CO2 expands when it enters a warm pink CO2 Cylinder, you will not get enough CO2. Please put your empty pink cylinder in the fridge to refrigerate the night before you use the adapter, because the CO2 cylinder is better filled after refrigeration. For safety, please hold the bottle with gloves during inflation time. Colour:As Shown Material:copper + aluminum Size: 12 x 10 x 4cm Package Contents: 1 x CO2 Refill Adapter 1 x spare gasket 2 x Seal ring 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.