I'm afraid there isn't too much to say. I started with two pieces of brass rod, 3/8 and 1/2 inch. Turned them on my little old Central Machinery lathe, one female and one male, each with 3/8-24 threads on one end and bored for cable insertion on the other end. The only other piece is a jam nut. The hard part for me was cutting the male threads straight enough for such a long length of threads. I first made a male thread component out of aluminum and the threads were really crooked and ugly! So, I went for brass and had better success, still not perfect, though. I don't know if the material change made a difference, but I do know I love working free machining brass. It cuts like butter!