Rims for a standard Kyosho Mini-Z axles. Diameter 20mm, offset +0/3,5/4,5mm. Fits: Atomic DRZ, Drift Art DA3S, WLToys K969/K989 etc.
No additional supports needed. There is already an inbuilt support to compensate for the particular offset as highlighted on the picture - you will need to cut that off after the print.
In case of any inconvenience, please contact me and I will do my best to adjust the model.