Sorry. I'm on a 38Kbps dial-up at home and sometimes I don't wait the full five minutes for the images on threads to load-up on Friday nights. I didn't notice his had the flexible tails. On further checking mine is a Hobbico. The Radio Shack ones I do have are also threaded but solderless (and still don't look anything like his - they are smooth, parallel cylindrical sleeves). The wires go in the center, out the side, and the plastic sleeve threads lock them in.