Here are 3 pieces of new old stock BNC female to female feedthrough connectors (bulkhead feedthroughs). These were made by Delta Electronics MFG. Corp. Beverly, Mass. and have a part number on the bag: M55339 13 00492. I have sold these to marine (boat) folks who use them in harsh environments.  Handy stuff!  Remember I combine items to save you shipping costs, ask me to do so before you pay!!

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