1. Cylinder can be reused, easy to use and convenient to refill. 2. Good sealing, easy to inject carbonated water into the gas cylinder, suitable for all soda machines. 3. which is easy to install and use. 4. Made of lightweight materials, durable and resistant to wear and corrosion. 5. With a separate silicone protective sleeve, it is compact and easy to carry. Type: Soda Maker Color: Black + Blue + Silver Material: Aluminum Alloy + Plastic Package Contents: 2 x Cylinders 2 x Protective Caps 2 x Protective Sleeves Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.