A drop forged, carbon steel shackle with an eye bolt which has metric coarse threads at one end. Please specify Ungalvanized (Black) or Galvanized shackles is required. Ungalvanized. Size: Body dia: 58mm, Opening: 116mm, Screw Pin Thread: M64, Clear Length: 198mm, Pin dia: 68mm, S.W.L: 16ton.