Extruder visualizer (rotation indicator) for 5 / 4.5 mm shaft

So I wanted one on my Kossel.
So I made one.

You can have it too.
With sources, if you need:
https://cad.onshape.com/documents/02068c2bc018b2d4652064d3/w/604c00360e8a7c8d6e22961d/e/ad54262db7b78f13f3066da4
(some times onshape won't let you to download the cad files, just ask here in comments if this happens, I will upload snapshots of these files here for you)

It takes a long time to print because of all these small holes.
But it looks noice.

https://youtu.be/Nq6tMzqps_k