Plastic per military specification mil-p-18177, type gee, 1.750 in. Lg, 1.060 in. W, 0.062 in. Thk, two 0.140 in. Diameter holes spaced 0.750 in. C to c 0.380 in. From right end, two 0.060 in. By 0.310 in. Slots spaced 0.750 in. C to c 0.560 in. From right end, six 0.109 in. Holes irregulary spaced, two 0.328 in. Holes spaced 0.430 in. C to c
