Material aluminum, eclipsaloy, no. 49, t-temper, bendix corp; surface treatment anodize; 0.468 in. Lg; 0.404 to 0.405 in. O/dia; 2 holes 180 degrees apart, w/0.077 to 0.082 in. Diameter thru; o/dia rrecessed to a diameter of 0.245 to 0.250 in. For a lg of 0.135 to 0.140 in.; i/dia 0.255 to 0.257 in., recessed to 0.1875 to 0.1880 in. Diameter for a lg of 0.196 to 0.201 in.
