The EZ-Pour Jerry Can Adapter provides a convenient way to use EZ-POUR Spouts with Jerry Cans. This adapter is compatible with all EZ-Pour Spouts and can be used with both plastic and metal Jerry Cans. To use it, simply attach the adapter to the can and use our Yellow Solid Base Cap. The adapter also comes with an O-ring that allows you to use the original factory vent for pouring and a flat gasket that ensures a tight seal for the tank. Please note that EZ-Pour Spout is not included.