C/o 1 tube, steel per mil-t-6736, comp 4130, 1.680 in. Lg by 1.560 in. Od by 1.250 in. Id; 2 leg, steel per mil-s-18729, comp 4130, 2.560 in. Lg by 1.000 in. Thk by 2.180 in. Wd w/two 0.313 in. Diameter holes in line; 3.720 in. Lg o/a; nickel plating o/a per mil-c-26074, cl 2