This model consists of a few other models I found on printables. Its purpose is to replace a broken part of my hama car phone holder (see images).
Using the mini clamp serves for mounting the phone holder to my car. The ball joint is designed for 17mm diameter, so it fits perfectly into the existing ball mount of the hama phone holder. Both models are connected via the gopro connection mount and secured using a metal screw and nut.
The author remixed this model.
No differences, I just combined the two original models. I used the parametric functionality of the Ball Joint model to compile a ball joint of 17mm diameter to be able to exactly fit into the existing ball joint mount of the phone holder.