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. Galvanized. Size: Body dia: 36mm, Opening: 54mm, Thread Bolt & Nut: M42, Clear Length: 123mm, Pin dia: 42mm, S.W.L: 8ton.