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: 14mm, Opening: 28mm, Screw Pin Thread: M16, Clear Length: 47mm, Pin dia: 17mm, S.W.L: 0.8ton.