Cast steel; 1.935 in. Min, 1.938 in. Max bore dia; 5.520 in. Width between flanges on ends; 4.200 in. Diameter of counterbore; 5.207 in. Width between deepest ends of counterbores; three 0.203 in. Diameter by 0.188 in. Deep equally spaced on 2.216 in. Diameter bolt circle in both ends of roller