"For installation of Tablet DVD and multimedia screens in vehicles. The screen mount fits screens with a hole in the rear for thumb screw attachment ("-thread). The screen mount is placed between the front seats, giving the back seat passengers a perfect view. The screen mount comes with a tilt swivel so it can be adjusted in order to avoid light reflection. You can take the screen with you when leaving the vehicle. Installation is quick and easy. The interior of the vehicle will not be damaged, as no drilling holes is required."

Fitting instructions here:

Brodit #825056 BMW 520-545-M5 E60- E61 Monitor mount Tablet DVD Dashmount