AWS IOT Prototyping Labs Ring

Those rings were created out of Blender.
I got a tutorial for doing them on Blender 2.80, feel free to ask.

You print them all in one job and they should be fine to move.
I join the blend file so you can modify it as you wish to adapt it to your use case.

If you have any tips to realise such STL on Blender, feel free to drop them.