The AR.Drone has been designed to be easy to maintain. Every part can be
replaced when damaged, and the included tool kit enables you to assemble and
disassemble every part of your AR. Drone if necessary.
The tool kit includes a Phillips™ screwdriver to remove and reassemble the
motors and the Torx™ screwdriver for the main board and the navigation board.
Also provided is a special circlip tool used to easily insert and remove the
circlips that hold the propellers and gears onto the shafts.