As for the summary, this is a replacement knob for the frequency or volume adjustment on the Radioddity QB25 VHF/UHF Radio. 

I printed it with some cookiecad TPU 95A on my Prusa XL with whatever default settings and it seems to have come out great (the prusament TPU95A profile with the temperature adjusted). I don't see why it couldn't be printed with any other material.

The model is not quite perfect as it sits a bit further away from the radio than I would like, but that is an aesthetics issue. There is an issue with the STL where some of the edges are not closed, but Prusa slicer still handled it how I wanted, and as you can see the part came out fine.

If you have questions about the design choices, feel free to leave a comment.