A drop forged, carbon steel shackle with an eye bolt which has a metric coarse thread on one end. Please specify Ungalvanized (Black) or Galvanized shackle is required. Ungalvanized. Size: Body dia: 38mm, Opening: 57mm, Thread Bolt & Nut: M45, Clear Length: 129mm, Pin dia: 46mm, S.W.L: 9ton.