This is a direct replacement for the Aviation Design F-16 internal tanks. These tanks hold 40 oz. each and come preassembled and pressure tested. Unlike the AD tanks, these are serviceable with the removable Jet Tech O-ring style Fuel Fittings. (Also see the F-16 extra fuel tanks immediately shown below) 

The tank comes fully assembled and pressure tested with standard 1/8" Jet Tech O-ring style fuel and vent fittings installed but does not include a clunk.  Clunks may be ordered separately on the "fuel fittings"  page.