7 motors 20 gears kit

With 7 motors and 20 gears, including some pulleys, 2 fan blades and a battery holder, you are geared to start your journey with electro mechanical principles such as dear and pulley ratios and fans, depending on what you want to do. All of the motors in the set operates on 3V - 6V which means that you only need 2 AA batteries to start using the kit. If you want the motors to run at higher speed and with more torque, you can always add up to 2 more AA batteries to make the motors run more effectively. There are three different types of motors included in the kit to make sure that you can find the motor that you want to use for your specific project.