1. The car chassis has a of freedom and is very suitable for DIY subjects, science education, the development of hobbies, and educational toys for children. 2. Simple mechanical structure, TT motor, flexible rotation, environmentally friendly chassis, good stability, and easy expansion. It is a good product for DIY. 3. It is an integrated solution for robot learning, designed for education. The omnidirectional motion wheel robot car chassis kit can expand the electronic system. Omni-round intelligent robot is a good product for DIY, educational kit, 4. Suitable for robot enthusiasts, car enthusiasts, etc. 5. The mechanical structure is simple, and the universal wheels of the chassis are very flexible. It can move laterally without turning, adapting to difficult terrain. With these four wheel combinations, full-sport functions are even more flexible and convenient. 6. No plug-in is very convenient, and the whole system is highly integrated. Can be used to measure distance and speed. Product Description Applications: STEM, electronics projects, etc. Module Type: Aluminum Alloy Automotive Chassis Voltage: DC 6V Dimensions: 260 x 165 x 60mm Color: Yellow Material: plastic Package Contents: 2 set of Assembled Electronic Auto Parts Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.