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: 34mm, Opening: 50mm, Thread Bolt & Nut: M39, Clear Length: 116mm, Pin dia: 40mm, S.W.L: 7ton.