DIY 4WD Smart Car Chassis Kits For

Feature:-This 4WD Car Chassis Kits can be a perfect DIY kit for you-Mechanical structure is simple,it is easy to install.-With a 4 AA battery box and power switch.(Batteries are not included.)-The four turn speed dc motor flexible, directional well.Quad,chronological horsepower.Chassis and stability is very easy to extend-This car is the tachometer encoder.-Can use with other devices to realize function of tracing,obstacle avoidance,distance testing,speed testing,wireless remote control.Specifications:Material:Stainless steel+ABS plastic+BrassWheel diameter:about 6cmFloor thickness:about 3mmCar length:about 25cmCar width: about 14.8cmPackage Included:1 set 4WD car chassis kits