TR21-4 Quick CO2 Cylinder Adapter for Sparkling Water Maker with O-rings, Refill Adapter Compatible with Duo/Terra/Art Soda Machines - Purple

INSTALLATION NOTE - When using the adapter with a TR21-4 threaded CO₂ cylinder, if you find that the cylinder cannot be inserted into the machine, it is necessary to remove the bottom plate of the machine before placing the adapter and cylinder together.

UNIVERSAL COMPATIBILITY - Fits 60L TR21-4 threaded cylinders and models DUO, ART, TERRA, E-Terra, Crystal 3.0, Gaia.

DURABLE MATERIAL - Made of high-quality aluminum alloy, corrosion-resistant, lightweight, and robust, ensuring safe and long-lasting use.

SIMPLE INSTALLATION - One-piece design; simply screw the adapter onto the CO₂ bottle with a TR21-4 fitting (screw-cap system) to use it on a soda machine with a quick-connect system. No technical skills required.