This is a very good electric motor gearbox used for children's cars. The middle equipment is fabricated from metallic which is extra sturdy and durable. It will make fairly low noise and extra wear-resistant. It could be a excellent substitute part in your broken or previous ones. The voltage is 12V and the rate is 16000RPM. Name: Electric Motor Gearbox Total length: . 16 / 6 inch Hole Diameter: 1cm / zero inch Torque: Motor Gearbox Colour: black Material: plastic Package Contents: 1 * Electric Motor Gearbox Only the above package content, different products should not included. Note: Light and assorted displays could cause the colour of the thing in the photo a bit assorted from the real thing. The dimension allowed error is +/- 1-3cm.