I wanted a fidget toy and wasn't satisfied with the sloppiness of the existing models, so I recreated one in OpenSCAD and added optional magnet holes.
The STLs are examples for 3x4mm magnets or without holes, I've printed the shown examples in:
The author remixed this model.
Recreated in OpenSCAD, added optional magnet holes and made X/Y/Z tolerances individually adjustable.