Fits underneath the side of the center console and holds your iphone securely in place while driving.
It was designed for this phone case specifically: https://www.printables.com/model/236257-iphone-se8-case/comments/1042786
Source files included in case you want to customize it for your phone.
Note that the pictures show a different phone and an older version of this model.
The author marked this model as their own original creation.