This arm mount allows you to mount a (360 or other) camera or LED lights on top or below the DJi Mavic 3.
It has a female actioncamera foot and offers a connection of a 1/4" camera shoe so you can add any camera or LED light with a 1/4" screwhole.
To use the screw hole you will need a 1/4" camera shoe like the one
you can find here.