Quick Disconnect Straight ANR Helmet Cord with Single U-174 Plug, this cord is used to connect your helmet or headset equipped with an ANR quick disconnect U-384 plug to aircraft equipped with single U-174 jack. A quick disconnect feature is always recommended for helmets for emergency egress and convenience. Quick disconnect plugs allow the plugs to pull apart easily with the direction of pull aligned with the plug/jack. Made in the USA!