Remix of https://www.thingiverse.com/thing:4728452/files for Woom 6 headset (in my Woom 6 inner tube diameter was smaller, so I have redesigned the inner part). I've uses the "outer_collar" from the original project.
Works nicely with metric M8 screws and nuts, you need:
If you like my design do not hesitate to visit my YT channel - @taboretum
The author marked this model as their own original creation. Imported from Thingiverse.