2-in-1 CO2 adapter for mini soda machines, CO2 gas pressure regulator and 3/8 inch to TR21.4 adapter

1. This versatile micro-regulator can be used with 12/16g water bottles and CO2 cartridges.

2. Includes a low-output pressure gauge and an 8mm barbed fitting for attaching an 8mm inner diameter gas tube. 3. The controller's maximum operating pressure is 30 psi, and it is easy to install and use. 4. With a 3/8" to TR21.4 adapter, excellent workmanship, good sealing, and is compatible with SodaStream. 5. Made of high-quality copper, it is durable, stable, and has a long lifespan.