5Pcs DC 3V Mini Motor For Arduino DIY Smart Car<br> Specification:  <br> Motor size: 20x15x25mm<br> Shaft diameter: 4mm <br> Axial length: 9mm <br> Voltage: 3-6V<br>  <br> Package Included:  <br> 5 x DC 3V Mini Motor For Arduino DIY Smart Car