This is a super easy way to go back and forth from the sanke couplers used for commercial beers to your homebrewed ball lock kegs.

You will need a gas side and a liquid side. Liquid is the one one the top of the coupler. You can tell the difference between the two by the small line on the gas on that the liquid side does not have

These are made of Stainless steel and come complete with o rings and poppet. Simply screw on to your sanke coupler and then hook your ball lock connectors to it and you are good to go!

This is the liquid connector