Feature: 1. The middle gear is a metal gear, and the motor is thickened with copper wire, so power and speed coexist.2. This motor gearbox works with low noise and the gears are more wear-resistant. 3. The electric motor car gearbox is easy to install and highly interchangeable. 4. This product is used in the motor gearbox of children's cars, which is convenient and practical. 5. The gearbox has stable performance, sturdiness and durability, and high work efficiency. Specification: Item Type: Motor Gearbox Material: ABS, alloy, copper Hole Diameter: Approx. 10mm / 0.4in Total Length x Width: Approx. 165 x 75mm / 6.5 x 3in Motor Diameter: Approx. 28mm / 1.1in Plum Blossoms Shaped Keyway Diameter: Approx. 58mm / 2.3in Package List: 1 x Motor Gearbox |