Steel; 7.875 in. Od; 4.438 in. Id; 2.406 in. Lg o/a; 0.062 in. Thk; w/3 holes 0.281 in. Dia, 120 degrees apart, and 1 hole 0.375 in. Diameter on a7.000 in. Diameter bolt circle; also has 6 oval holes 0.375 in. W, 0.625 in. Lg, 2 holes are spaced 2.000 in. Apart, this spacing occurs every 120 deg