NOTE: The cylinder is empty and does not contain CO2 gas. Cool and Healthy: Our sparkling water maker allows you to craft your own natural soda water, reducing bodily stress while offering a refreshing, healthy, and energizing drink. Enjoy creating a variety of colorful beverages anytime, anywhere, indulging in the joy of making soda water, juice, wine, cocktails, or beer. It also makes a great gift to share happiness with friends. Instant Enjoyment: All you need to do is fill the bottle with clean, cold water, screw in a 60L CO2 cylinder, and press the carbonation button for 2-3 seconds to achieve your desired taste of richly flavored, cool, bubbly water. With a dissolution rate of up to 60%, this soda maker machine provides you with full-bodied bubbles and a cool taste. However, please ensure not to carbonate for more than 5 seconds at a time and use cold water between 4-5°C for richer bubbles and a better taste. Cost-effective and Sustainable: We provide you with 2 1L food-grade PET bottles with caps for convenient storage. This sparkling water and soda maker includes 2 CO2 cylinders (the cylinder is empty and does not contain CO2 gas). With a replaceable cylinder design compatible with mainstream soda brands' 60L CO2 cylinders, one cylinder can make 180 bottles of soda water (330ml per bottle), making it more economical and eco-friendly for repeated use. Secure Safeguarding: The safety valve automatically opens to release excess gas when the bottle reaches a certain pressure, ensuring automatic depressurization for safety and preventing the bottle from exploding. Thanks to the excellent nozzle design, you won't have to worry about clogging or freezing. It's truly reliable! About the CO2 Cylinder valve thread: North America/Europe is Tr21, Australia is G1/2 and CGA320. No Electricity Needed: This sparkling water maker kit doesn't require electricity or batteries, enhancing its flexibility and portability. With an excellent design and sleek profile, it perfectly integrates into your home or office space. You can also find it in coffee & beverage shops, at camping & gatherings, making it suitable for various occasions! Package Content 1 x Sparkling Water Maker 1 x Set of Accessories