This is a drift wheel that I made for my WLToys 144001. I wanted to be able to drift around on carpet or concrete and these wheels make it happen. They should fit any RC car or truck with a 12mm hex coupler and a 3mm shaft. 

NOTE: I have included a test print to check your machines tolerances. The model is sized at 4mm for the shaft hole and 12.3mm for the hex adapter. I strongly suggest printing the test print first to make sure it will fit your car and adjust your settings before printing the wheel.

Printing Instructions: This model should not need supports. I printed in Polymaker PLA+ and it is holding up on outdoor roads. I would print with 3-4+ perimeters for durability.