This is a wheel hub centric ring that fits into RONAL wheels with 68mm inner diameter and that cente on 54,1mm hubs used on Citroen, Daihatsu, Hyundai, Kia, Lexus, Mazda, Nissan, Opel, Peugeot, Subaru, Suzuki, Toyota and maybe othe.
The design was derived from a single centric ring I purchased assuming I would get a set of four. It fits well into my RONAL wheels and to my little TOYOTA IQ. It might fit to other wheel makes and vehicles, as well.
I suggest to print only one in fit step to test the fitment and then do the othe later on.
Warning: Wheel hubs become hot during hard brakings. Use heat resistant material like ABS or PETG. PLA will most likely melt quickly.