2steel, painted gray, 4.500 in. O/a lg; 2.000 in. Bore dia; 1st end 3.000 in. Od, internally thd, 2-1/2 in.-12, un, 2b, rh thd size 1-9/64 in. Thd lg; 2nd end spherical ball shape, 3.391 in. Od, 1.695 in. Radius, 3.000 in. Recess dia, 0.625 in. Recess depth