This adapter is suitable for the Mini Duotight Regulator to fit a threaded Sodastream cylinder.
Please note: The adaptor can only engage the cylinder via the round knob. It cannot retract / disengage. Always use two spanners / adjustable wrenches when attaching this to your sodastream.
Specifications:
5/8' 18TPI 18UNF male to G1/2 female
From: Kegland