MagLock Ring (Makers Pack). This pack is super simple... (6) 6x4mm magnets... that's all.
When installing these into the MagLock Ring printed in PETG... be sure to alternate the polarity. This way you can make any number of rings.. and they're all exactly the same. Rotate by 60 deg and they attach to each other... rotate 60 deg again and they'll force themselves apart.
Looking for the maker files? https://pwncnc.com/products/maglock-maker-files