Michaelruml was so kind to share the .step and .f3d. Thanks!
I mounted this magsafe holder on this Skoda Octavia III dashboard mount. I also wanted to use standard M3x10 bolts that were delivered with my MK4 printer. So I changed the 2 holes for the bolts and removed the middle hole that had no purpose.
As described in the original model:
You need one M3 (M3x8 ideally) bolt and a M3 square nut for fixing the charger in place.
The cable clips are part of the model on Thingiverse.
The author remixed this model.
Changed the 2 holes for the bolt and removed the middle hole.