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: 30mm, Opening: 45mm, Thread Bolt & Nut: M36, Clear Length: 102mm, Pin dia: 36mm, S.W.L: 5.4ton.