TR21-4 Cylinder Refill Adapter with Ball Valve for Sodastream CO2 Tank Connector
Connect your small sodastream cylinder to the black adapter (B end adapter). W21.8 CO2 Cylinder Refill Adapter Hose CO2 Refill Station for SodaStream Tank. CO2 Refill Adapter Connector Fill Station On/Off Adapter for SodaStream Cylinder.