That's a cradle for a Krunia android auto screen.

https://www.amazon.com/Krunia-Wireless-Landscape-Bluetooth-Navigation/dp/B0DT72HT16

I used double side tape to attach it to the car panel, and magnets glued to the screen and to the cradle to keep the screen in place. I used 8 magnets, 4 glued to the screen and 4 glued to he cradle, using superglue.