The item measures 4.5 inches in length and 1.312 inches in width, made from brass alloy according to QQ-B-626, with a half-hard temper. The finish is silver plate, as specified in QQ-S-365 Type 3 Grade B, within the thickness range of 0.0005-0.0010 inches over a fretless nickel coating per MIL-C-26074, Class 1, within the range of 0.0003-0.0005 inches. This item is used for an Avagan/AVQ-25, a laser-based range finder-target designator.