Customizable Steam VR base station pole mount

Lots of mounts for these base stations, but none that are customizable and at the same time made for poles. As shown on the picture, it is mounted to the post on my

On top is a thread to fit the ball mount of the Steam VR 2.0 base station. The ball needs to be carried over.
This has a cylinder shaped hole on the bottom of your chosen diameter and depth.
There are also screw holes, should you want to keep it from turning.
The mount length is the length of the main body of the part, not including the threads that are 9,5 mm high.
It's also not additive to the hole depth. So if you want a 50 mm deep hole and the threads starting 100 mm above where the hole bottoms out, then mount length needs to be 150 mm.

The threads are not perfect. Using the original nut seemed to provide a bit too much friction. I opted to use the nut from this thing instead: https://www.thingiverse.com/thing:5188154