Screw pin shackle type used for multiple hitches and crawler tractors. Forged to provide better grain structure alignment without built in stress and more consistency in strength, quality and conformity. Pin is zinc plated. Made of steelScrew pin shackle type used for multiple hitches and crawler tractorsDrop forged short reach hooks3,000 lbs. working load capacity3/8 inch diameter body7/16 inch diameter screw pin