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: 26mm, Opening: 41mm, Thread Bolt & Nut: M30, Clear Length: 88mm, Pin dia: 32mm, S.W.L: 4ton.