https://www.hackfabhobbies.com/products/hfb02027?u...

3D Printed hex adapters to fit 12mm wheels onto the Mini-T 2.0. These could be used to mount Tamiya M-Chassis wheels (mini aka m03 m05 m06 m07 m08), touring car wheels, or dozens of other options. Four hexes included. Wheel pictured is not included, just for reference. It is a Tamiya Mini Wheel (54913).