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: 40mm, Opening: 60mm, Thread Bolt & Nut: M48, Clear Length: 136mm, Pin dia: 48mm, S.W.L: 10ton.