This Quick Disconnect Coupler is of a Ball Lock design that works with Cornlelius pepsi kegs. This connector is gray (gas) and has a male 1/4" thread for a flare fitting. This connector already has attached is a special 1/4" nut that has a 5/16" hose barb attached. The purpose of the hose barb is to match the same barb size found on your standard Co2 Regulator. The standard air line assembly will connect properly and tightly with this connector.
System: Ball Lock
Male 1/4" thread for a flare fitting.
Includes attached hose barb that fits 5/16" air line
Ball Lock Home Brew Keg Tap - Gas In with Male Flare Fitting with Hose Barb Reviews