These are small motors but much more powerful than one expects. Having a couple of these in the toolbox will always come in handy. 10kRPM 15.7g.cm 3V-6V
This is a brushless6v dc motorthat is used often in robotics. They are used with wheels to make your robots mobile or even as fans. Remember to use an NPN resistor and flyback diode when using an Arduino to power motors.