Recently recieved a couple more interesting transposition brackets from Canadian Collecting friend James Mulvey. It amazes me how many differert brackets and styles were devoted to this problem of crosstalk on the wires. I could understand the different brackets for conditions needed but why so many insulator styles? Anyways these ones I've collected so far are the main common styles used for this purpose but I'm finding new designs all the time. This one I got is a heavy duty made piece and uses regular insulators. Most I've seen have CD 154's or 155's on them. I put a couple of 154s and a 152 plus a 155 for show. Someday I hope to make some display brackets to mount on my back porch.