A. This is a scooter accessory - a thumb brake and speed control handle with a Hall sensor speed controller. It has an exquisite design, with specifications of 65*43*29 mm and a weight of only 0.038 kg. It is lightweight and easy to carry, and will not add too much burden to the scooter. B. This accessory is suitable for various users. Whether you are a beginner or an experienced skateboard enthusiast, it can meet your needs. In terms of design, practicality and functionality are fully considered, and it can accurately achieve the functions of braking and speed control, bringing users a safe, stable and smooth skateboarding experience. C. It is sold in regions such as Europe, South America, Southeast Asia, North America, Northeast Asia and the Middle East. It also has an authorized private brand, and its quality is reliable. D. This scooter accessory can effectively improve the performance of the scooter and is a good choice for scooter upgrading and modification.