Socket Type 359. Stores reference no. 10H/2206. Large brown bakelite socket that was wired into the aircraft at the different crew positions. This enabled aircrew to plug their flying helmets into the aircraft 's radio system. The socket is fully wired. New old stock in excellent condition. The 'bell' jackplug/wiring loom are pictured for reference purposes only and are not included in the sale. Stock code H20818-9.