Split Design: Quick connector features a split design, making installation a breeze. it can be installed without removing the machine base and 't damage the machine itself. Cost-effective Solution: No need to purchase new cylinders or hunt for replacement options-this adapter makes refilling your CO2 cylinder hassle-free and economical Premium Material & Durability: Crafted from high-quality aluminum with a polished electroplated finish, this adapter offers excellent resistance, leak-proof performance, and high-temperature durability. Enjoy safe and reliable soda every time you use it Easy to Use: Simply connect the quick adapter to your soda maker and screw the other end into your standard CO2 cylinder with TR21-4 male thread. It's a quick and secure solution for seamless soda drink Color: Material: aluminum alloy Package Contents: 1 x Cylinder Refill 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 the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.