Aluminum alloy, qq-a-601, composition 356, temper t6, anodizedfinish type ii class 1 per mil-a-8625/5, 2.75 in. Lg, 1.75 in. W smallend, 1.19 in.H, two 0.251 in. Min, 0.253 in. Max diameter holes small end0.510 in. Diameter by 82 degree countersunk farside, holes spaced 0.750 in.C to c 0.38 in. From end, 1.875 in. Cutout at large end 6 degree fromside 2.166 in. Min, 2.168 in. Max from center of holes to top of cutout, one 0.400 in. One 0.312 in. W slot top side