C55B, 1/4" Shielded Jack 3-conductor, MIL Type JJ-095, M641/14-1. Mates with 482 or 482Z plug. MIL type insulation and finish. Reliable with minimum behind-panel depth.. Note-effective Feb 2014 C55B is no longer available. Please see Switchcraft C55BZ which is similar to Switchcraft C55B but is not mil marked or mil qualified. Pricing for C55B good for stock shown only. For additional units you will need to look at the new C55BZ.