"The item is made from 4130 steel plate, meeting the requirements of MIL-S-18729. It has a cadmium plate finish in accordance with MIL-STD-171. The item features one hole with an inside diameter of 0.203 inches and an outside diameter of 0.390 inches. This part is part of the electro-target designator set and is used on the turret assembly for PAVE TACK POD, specifically designed for use on F-4/F-111/RF-4 aircraft."