Steel carbon qq-s-698, 9.310 in. Outside dia, 6.660 in. Inside dia, 10 slots on inside diameter 1.592 in. Minimu, 1.596 in. w, 0.185 in. Depth, located on center at 36 deg, 4 holes 0.279 in. , 0.286 in. dia, equally spaced 2.475in. , 2, 485 in. from vertical and horizontal center lines