This Robot Car Kit for Do It Yourself, is the fundament for your own home-built Robot Car, thus it contains the scaffold for a robot or car which is operated by an Arduino. You can choose the further required parts like power supply and motor control by yourself, we would recommend using JOY-IT Accessory. This Kit contains base plates, 4 motors with a wheel each and the matching set of screws. The bores were especially set for an Arduino.