For SodaStream DUO / Terra Quick Connect to External Co2 W21.8-14,CGA320,G3/4 Tank Adapter Hose Set. Used for SodaStream DUO Quick Connect Machine. This item can connect your W21.8-14,CGA320,G3/4 threaded Co2 tanks to your Soda Stream DUO machine directly and you no need to refill your soda cylinder anymore,it has soft hose and durable.
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