Feature:1. High Qulity Material: This metal reduction gear is made of high quality steel material, durable, wear resistant, high strength and more refined appearance.2. Deceleration Effect: The steel deceleration big teeth of the reduction gear can play the role of deceleration and increase the of the engine.3. Stable Performance: Owns a more efficient deceleration power, changing speed and provides a smoother ride, reducing revs and increasing torque.4. Balanced Ride: Extremely fast modification part, accurately sized, provide a balanced ride and maximize the deceleration performance of the remote controll car.5. Easy Operation: It is easy to install and disassemble, and the original plastic parts or damaged parts can be directly replaced to obtain higher strength.Specification:Item Type: RC AccessoriesMaterial: SteelColour: BlackProduct size: 58x42mm / 2.28x1.65inGross Weight: 69g / 2.43ozApplication: For ZD Racing 7509 1/10 RC Off Road RC Car Package List:1 x Steel Reduction GearNote:1. Please allow 1‑3mm error due to manual measurement. Thanks!2. The monitor calibration is inconsistent, the color of the item shown in the photo may be slightly different from the actual object.