Features 1. This is a great electric motor gearbox used for kids' cars. 2. The middle gear is made of metal, which is more robust and durable. 3. It will make quite a low noise and be more wear-resistant. 4. There are many types for different voltage and speed that you can choose as needed. 5. It will be a great replacement part for your broken or old ones. Specification Features: This is a great electric motor gearbox used for kids' cars. The middle gear is made of metal, which is more robust and durable. It will make quite a low noise and be more wear-resistant. There are many types for different voltage and speed that you can choose as needed. 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