Drop forged carbon steel shackle with a hexagon, metric coarse threaded bolt, which has a split pin hole at the end and a securing nut. Please specify Ungalvanized (Black) or galvanized shackle is required. Galvanized. Size: Body dia: 38mm, Opening: 57mm, Thread Bolt & Nut: M45, Clear Length: 129mm, Pin dia: 46mm, S.W.L: 9ton.