These lug nut covers will fit on the Ford Transit AWD (not RWD), on Method MR701/MR703 wheels, with factory nuts. Very unlikely to fit other configurations.
Friction keeps them in place nice and tight, no need for more (e.g. magnets).
More info & tips on upgrading the Transit AWD with Method wheels: https://faroutride.com/transit-wheels/
Print parameters that worked for me:
The author marked this model as their own original creation.