Ball joint for GoPro fixation V4

Here is the 4th version of GoPro fixation with Ball joint.
The 1st one is here:
http://www.thingiverse.com/thing:38040
The 2nd is here:
http://www.thingiverse.com/thing:38042
and the 3rd is here:
http://www.thingiverse.com/thing:38397
It is made with 6 parts