G 1/2“ female to W 21.8 x 1/14 male threading adapter. This allows Vinoserv CO2 gas cartridges to be connected to a CO2 pressure reducer.
Reducer to connect a standard pressure regulator (W 21.8 x 1/14 internal threading) with gas cartridges (G 1/2" external threading). Suitable for all Vinoserv CO2 gas cartridges and also for CO2 cylinders of your Sparkling Water Maker with G 1/2" thread (e.g. "Wassermax" 280 g steel cylinders).