Alberth Aviation's Oxygen Fill Adapter tool is a new design combining three tools into one. You will no longer need a fill port connector, a wrench, and a screwdriver to service the aircraft oxygen. The new design has a fill port connector inside of a spring loaded retractable socket driver with a removable attached screwdriver bit. This design allows easy access to tight clearance oxygen fill ports, secure removal of the service port fill nut, and allows the user to know they have achieved a tight seal before servicing the aircraft's oxygen system. The design also prevents service port nut stripping and over-torque incidents. View the Alberth Aviation's Oxygen Fill Adapter tool product demonstration video on the AMTonline video network. For more information visit www.alberthaviation.com.