This is an unopened Mini 4WD Super II chassis, along with other chassis including an assembled Super II chassis. I am decluttering and have decided to sell items I no longer use. The Super II black and assembled white chassis, and the Super XX chassis are made of polycarbonate ABS. The assembled Super II chassis has a high-speed floating gear, large-diameter hard propeller tires, gold terminals, hollow shafts, and more installed. Thank you for your consideration.