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: 28mm, Opening: 43mm, Thread Bolt & Nut: M33, Clear Length: 127mm, Pin dia: 34mm, S.W.L: 4.8ton.