Features Reduce Noise: The electric motor gear box emits very low noise, which can largely reduce the noise brought by it. It is a very practical part. Strong and Durable: The electric vehicle motor gear box is made of metal materials. Metals have the characteristics of sturdy and durable, and have a long use time. Scope of Application: The motor gear box is an excellent electric motor gearbox, which is used to replace parts such as children's cars. Ideal Replacement: For the broken or old parts, the motor gear box will be a good alternative part. It can be replaced directly, which is very convenient. Multi -type: The gear box has a variety of types without voltage and speed. You can choose different voltage and speed as needed. Features: 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.  There are many types for different voltage and speed that you can choose as need. It will be a great replacement part for your broken or old ones. Specifications: Type(Optional): 6V12000RPM, 12V23000RPM, 12V18000RPM, 12V8000RPM,  6V10000RPM, 6V8000RPM, 12V20000RPM, 6V15000RPM Hole Inner Diameter: 1.2cm/0.5in Quantity: 1 Weight: 483g~515g(approx.) Package Includes: 1 x Electric Motor Gearbox Package List