Threads are 1/4-28 right hand.  with turnbuckle to cable rod side being left hand threads. New old stock, without original package<> >>Estate find I don't know designed use. <<Study pictures closely to make sure they will fill your needs, and for overall condition and size>,>>>Shipping will include tracking number. << NOTE; OVERSEAS SHIPPING IS THROUGH E BAY'S GLOBAL SHIPPING ONLY...>Thanks for looking, Bob.SS10