A. It is made of materials and is more sturdy and durable. The appearance is as follows. B. Length: 42 mm C. Diameter: 7 mm D. Applicable vehicle model: D12 1/10 remote control car E. Tool supplies: Assembly type F. Upgrade parts/accessories: G. Remote control car parts and accessories: Servo accessories H. Use: Vehicles and remote control toys I. Technical parameter: Value 2 J. Remote control peripherals/devices: Receiver K. Applicable vehicle model type: L. Four-wheel drive: Assembly type M. Wheelbase: Screws N. Color: Black O. Material: Metal P. Packaging contents: Q. 4 pieces R. 2 front fixing pieces S. 2 rear fixing pieces T. 1 set of installation accessories U. Only the above packaging contents are included, and other items are not included. V. Note: Light and different displays may cause the color of the item to vary slightly from the actual object. The measurement error is allowed to be +/- 1 - 3 cm.