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: 22mm, Opening: 34mm, Thread Bolt & Nut: M24, Clear Length: 75mm, Pin dia: 26mm, S.W.L: 3.15ton.