Shackles - Multi-use: Type - Anchor; Size - Nominal - 5/8 in; Size - Opening - 1.06 in; Size - ID Max - 1.56 in; Pin Diameter - 0.75 in; Pin Type - Screw Pin; Material - Forged Steel; Finish - Self-Colored, Blue; Working Load - 3.250 ton; Weight Each - 1.30 lb; Listings - RR-C-271, Type IVA, Grade A, Class 2; Manufacturer Series - Campbell 419-S