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. Ungalvanized. Size: Body dia: 46mm, Opening: 68mm, Thread Bolt & Nut: M48, Clear Length: 156mm, Pin dia: 56mm, S.W.L: 13ton.