ITEM NAME:RS390 Electric Motor Gearbox 6V 18000RPM Car DC Motor Gear Box for Kids Car S8D8 RS390 Electric Motor Gearbox 6V 18000RPM Car DC Motor Gear Box for Kids Car S8D8 This is a great electric motor gearbox used for children's cars. The middle gear is made of metal which is more sturdy and durable. It will make quite low noise and more wear-resistant. It will be a great replacement part for your broken or old ones. The voltage is 6V and the speed is 18000RPM Name:Electric Motor Gearbox Type: 6V 18000 RPM Torque: Motor Gearbox Colour:Black Material:PP+PM Size:about 16.5cm Hole Diameter: 1 cm Package Contents: 1*DC Motor.This is a great electric motor gearbox used for children's cars. Torque: Motor Gearbox. Type: 6V 18000 RPM. 1 DC Motor.