Applicable models: The transmission gearbox is suitable for HSP 94122 94102 1/10 RC car, with strong compatibility.Standard size: The standard size of the gearbox is easy to install and disassemble, and the old gearbox can be directly replaced.Low noise: The inner gear of the gearbox is finely processed, with a glossy surface and low transmission noise.Anti-rust: The gearbox is made of high-quality plastic and steel, which is a long service life.Good performance: The 2-speed gearbox performs better and improves the durability of the rc car. Note: 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. Specification: Item Type: 2 Speed Gear Box Type: RC AccessoriesModel: 02076 Material: Plastic, Steel Colour: Black Size: Approx. 58 x 56 x 45mm / 2.3 x 2.2 x 1.8in Applicable Model: Suitable for HSP 94122 94102 1/10 RC car Package List: 1 x Speed Gear Box