Amphenol 91-mpf3s 3 pin miniature microphone jack mates with Amphenol 71-3s and 91-mpm3s. high quality shielded compact connector accommodates 0.1" od pin contacts and flared metal shell for vintage radio and other equipment. phenolic element with cadmium plated brass shell. polarized by pin configuration. measures 0.65" od x 13/16" (l). accommodates cables up to 1/4".