The kit includes two Nema 42 stepper engines, two wheels and an axle. Using it together with a platform you can create a smart car 2WD minimal. With two kits and a platform you can instead get a smart car 4WD. In both cases it will be possible to install the electronics necessary to control, a battery pack and several additional modules, sensors, cameras etc.
Tires: Rubber 65mm
Axis: aluminum 3mm