A weldless, drop forged, carbon steel shackle with a hexagon, metric coarse threaded bolt, nut, and a split pin hole at the other end. Please specify Ungalvanized (Black) or Galvanized shackle is required. Galvanized. Size: Body dia: 60mm, Opening: 90mm, Thread Bolt & Nut: M64, Clear Length: 275mm, Pin dia: 70mm, S.W.L: 20ton.