Product Description Features: Easy to install: Replaces terra/duo/art vaporizers. With the CO2 Refill Adapter, you can simply fill your own CO2 cylinder by connecting a commercial CO2 cylinder to a quick connect pink CO2 cylinder. Why choose us? This will be the perfect extension to your terra/duo/art fountain. With this refill adapter you can have cost effective refills at home and anytime you want and you can save a lot of money. Feature Upgrade: No more exchanging your empty CO2 cylinders, no more complicated towing with our refill adapter, it is made of high quality material, durable and it is metered. It is designed for CO2 tanks with duo valve. Specifications: *Color: as shown *Material: aluminum alloy, copper *Function: Connect CGA320 threaded cylinders to DUO and TERRA machines using quick-connect cylinders Package Contents: 1pcs CO2 Refill Adapter Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data. Payment Payment must be completed within 5 days. If you have any problems about payment, please contact us via Delivery details We only ship to confirmed Order addresses. Please comfirm that your Order address is in line with your shipping address. Please kindly note that the c ombined shipping is not provided because the shipping fee is calculated by weight. Also, the each additional item means exactly the the same color and size. It takes about 7 -15 working days to US; about 10-30 working days to other countries. Transit time may be a little delayed because of the bad weather and customs inspection . If you do not receive your item within 30 working days since payment finished, please contact us immediately for further assistance. Contact us We strive for 100% customer satisfaction! Positive Feedback is very important to us. If you have any questions, p lease feel free to contact us via "Ask seller a question" . We will reply your email within 24 working hours.