1、For Kids Car: Suitable for most kid electric cars remote control car steering motor gear box (that is, the motor that controls the left and right directions). 2、Low Noise: The gear box speed is 6600RPM, which has high efficiency and low noise, with strong practicability. 3、Nylon Coupling: The gearbox adopts nylon coupling, which is lightweight and wear resistant, with stable transmission. 4、Copper Motor: Using pure copper motor, with strong power and low heat generation, safer and more durable. 5、Compact Size: The motor gear box is small and compact, easy to install and does not take up space. Item Type: 12V Motor Gear Box Material: ABS, nylon, copper Purpose: Suitable for most children electric car remote control steering motor gearbox (that is, the left and right direction motor under the steering wheel of the child car) Operating Voltage: DC12V Motor Model: RS380 Gearbox Parameters: Type A: 12V 6600RPM (opened coupling) Type B: 12V 6600RPM (closed coupling) Coupling Outer Diameter: Approx. 24mm / 0.9in Coupling Inner Diameter: Approx. 14.5mm / 0.6in Gear Box Hole Inner Diameter: Approx. 13mm / 0.5in Total Product Length: Approx. 13.8cm / 5.4in 1 x Motor Gear Box