I added pockets for 10mm magnets but I never found that I needed them.
Printed on a Prusa mk4 with 0.2 mm layer height (PETG but any material would do).
Freecad model included. The one with the files is a bit of a mess so I included just the lock rings in a separate file. I recommend to use that one when you design your own.
The included machine adapters (females) are just some random ones (i.g fits the machines I have ;) so you probably will have to design version that fit yours!
The author marked this model as their own original creation.