Summary

Over engineered desk grommet. Threaded so its fixed in place.
Designed for a 60mm hole size.

The cover is threaded as well so it would be fixed to the main body as my Intention was to mount a USB-C PD outlet through it and wanted it secured in place.

Step files provided if you would like to modify the design.
tolerances may be tight on the thread, printed on a Bambu Lab P1S