Steel; o/a lg 1.986 in., 2.062 in. Od; centerbored from first end, id 1.470 in., lg 0.650 in.; thd from second end, unef 1.562-18, rh; three holes, 0.300 in. Equally spaced on periphery 0.312 in. From first end; one setscrew on periphery 0.312 in. From first end