This is a great motor gearbox for kids cars.<br> The middle gear is made of metal, which is more durable. The noise is very small, and it is more wear-resistant.<br> It will be a great replacement part for damaged or old parts. The voltage is 12V and the speed is 20000RPM Name: Motor Gearbox Total Length: Approx. 16.5cm/6.5in<br> Aperture: 1cm/0.39in<br> Torque: Motor Gearbox<br> Material: PP+PM<br> Color: Black<br> Package Contents: 2 x DC Motors<br> Only the above package contents, other products are not included. Note: Light and different monitors may cause the color of the item in the picture to be slightly different from the actual item. The measurement allowable error is +/- 1-3 cm.<br> Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store