Car Phone Mount

I had a cheap car mount from china, that broke. Decided to use the part that holds the phone and design my own mount that is sturdy. Also wanted to make it so it mounts rigid with gopro mount bolts that I had and with 4mm nuts (you can use the gopro ones).

I uploaded all the files in .3mf, but you need to arrange them and rotate them in the slicer for better printing. The top part prints well as it is, but I rotated it so it prints with supports so the layer lines keep it sturdy.

One thing that I would change is a type of anti-rotation mechanism in the joint, because you have to tighten it well to keep it from moving -like some lines or something like that. Uploaded the fusion360 file of the project if anyone wants to remix it.
The ball is 17mm.
Also I printed these in CF-PETG. The top bracket is printed in TPU.