Weldless, drop forged, carbon steel shackle with an eye bolt which has a metric coarse threaded end. Please specify Ungalvanized (Black) or Galvanized shackle is required. Ungalvanized. Size: Body dia: 38mm, Opening: 57mm, Screw Pin Thread: M 45, Clear Length: 175mm, Pin dia: 46mm, S.W.L: 9ton.