The Plug Extender is used to extend the reach of a plug when inserted into an area too small for hands.
Aircraft Electronics often employ a mounting tray that holds the connectors that mate with the aircraft wiring harness. The plug extender works with DB style connectors. The handle and the clamp have a groove in them to capture the edge of the connector.
The Plug extender is available in 2 widths, 2 and 2 3/4. The wider handle will accommodate the smaller plugs, but the smaller handle will not handle the larger plugs. It is easy to change from cable to cable, so if you have a cable that is used infrequently, you might consider sharing a handle between cables.
The 2″ handle accommodates DB9, 15,25, and 44HD connectors that are approximately .5″ high
The 2.75″ handle accommodates DB37, 50 , 78HD .490″ high and .6″ high.