Apollo Saturn Exploding Bridge Wire (EBW) Firing Unit, the main box measuring 6.5″ x 3.5″ x 3″, with an attached black 36″ length of cable. The top of the unit bears a General Laboratory Associates label, reading: "EBW Firing Unit for 40M39515-119, Part No. 41501, CH. P, Serial 565." A Chrysler Corporation Space Division inspection label is applied on the side, dated May 19, 1972. In fine condition. The EBW Firing Unit was used to activate charges for stage separation. A desirable piece of flight vehicle hardware.