2c/o tube, alloy steel, 4340, mil-s-5000, 0.625 in. Nom id, 1.500 in. Nom od, 5.783 in. Min, 5.785 in. Max o/alg, hook, alloy steel, 4340, mil-s-5000, pin, alloy steel, 4340, mil-s-5000, 0.616 in. Nom od, 8.625 in. Min, 9.250 in. Maxo/a lg, 2 washer, 2 cotter pin