4 Wheel Smart Car Chassis Kit 4 wheel Smart Robot Car Chassis Kits for Robot Car Assembly is a simple yet versatile 4WD Robot Car Chassis Kit designed specifically for students and hobbyists. Featuring large size chassis plates cut from acrylic and designed with numerous holes and mounting points, providing plenty of space to carry a PCB board and any additional components that you choose. The possibilities are only limited by your imagination. This kit includes all of the parts needed to assemble the 4WD Robot Car Chassis Kit as well as a 4 x AA battery holder and four gear motors with wheels etc. Package Included: 2 x Car Chassis Boards(Acrylic) 4 x TT gear motor 4 x 20 Line speed encoder 4 x Plastic Tyre Wheels 8 x Fastener  Set of Screw , nut and copper pillar 4 x AA Battery Holder