Manifold sub-base NAV-1/4-1C-ISO With port pattern as per DIN ISO 5599/1, for manifold assembly, connections underneath. Conforms to standard=ISO 5599-1, Product weight=240 g, Auxiliary pilot air port 12/14=G1/8, Pneumatic connection, port 2=G1/4, Pneumatic connection, port 4=G1/4