You will need six 18x12x4mm bearings, M3x12 screws, M3 nuts and two M4x16 screws and two M4 Nuts. I recommend to use 8mm aluminium hex rod to make the axle, instead of the printed hex rod.
The rims get screwed together by tiny 2x10mm wood screws. The tires used are General Grabber X3 4.65x1.75-1.9
UPDATE 14.10.2024:
reinforced 12T Pinion for easier printing
The author marked this model as their own original creation.