Features: The 4WD Robot Car Chassis Kit offers a robust and platform with a simple mechanical structure, making it easy to assemble for both beginner and enthusiasts. Equipped with speed encoders, this chassis ensures flexible turning and precise movement, providing a stable base for advanced robotics projects. For electronics hobbyists, students, educational institutions, and beginner robot developers look to explore world of robotics and systems. Perfect for use in robotics competitions, educational experiments, DIY projects, and development of intelligent systems, offering possibilities for exploration. This kit ship as individual components with detailed assembly instructions, allowing users to quickly build their own functional robot car in just ten minutes, enhancing hands on learning experiences. Specifications: Material: Plastic Wheel Diameter: About. 6cm/2.36in Package Includes: 1 Set Robot Car Chassis Kit note: Please allow 1-2cm errors due to manual measurement. Due to difference between different monitors, the picture may not reflect the item actual color.