Microwave-guide-assembly with coax connector by MDL. (Microwave Development Laboratories, Inc.) NSN 5985-00-831-7781 Manufacturers part number: 112XT479-1 Description: "coupler- directional" - "PIPE R TUBING R PIPE FITTINGS NOI" For use on Phantom F4 aircraft weapons system. (Yes, just everyone has one of those in the hangar !) Status: NOS (New Old Stock) Ex USAF stores. Ok, so this part is a bit off the beaten track, but hey, it's new, in the box, never been fitted, and would actually look great as a display item as it's a nice piece of engineering and not too big at 9 x 5 inches, complete with blue plastic dust covers - printed MDL. RoHS Compliant: n/a