Rack and Pinion is one of the easiest ways to convert rotary motion ( which is produced by motor) into linear motion. As you can build 6 incredible models from this set, you will see how this super mechanism is used in a forklift to lift up cargo, a garage to open and close the gate, a machine to set the position of the bed, a car to steer the wheels and more! Push the button, watch it move, and experience with the Blix Rack and Pinion.