This 6-pin to Twin Plug Adapter from Bose allows you to easily maximize the utility of your Bose A20 headset. The 21.5" cord features a plug for the A20's 6-pin connector, while the other end features the dual .25"(PJ-055) and .206 (PJ-068) headset jacks used in the vast majority of GA airplanes. Once attached, you're headset is ready for action in standard equipped planes. Simply unplug the converter and your A20 is once again ready to go for 6-pin connectivity. An affordable, must-have item for A20 owners who operate a variety of airplanes.