Manifolds allow you to have one CO2 tank with multiple lines, each of which can be turned off individually without affecting flow to other kegs. Each ball valve contains a check valve that ensures no beer or gas can flow between the two kegs. The inlet barb on the manifold is 5/16" and the ball valve barbs are 3/8". Use standard 5/16" gas line with these manifolds.
All prices are in USD.