Create your very own balloon powered Cosmic Jet Racers and learn how they work using Isaac Newton"s principles of motion. A hands-on jet racer making kit which will be loved by both kids and adults. It"s a fun group activity. Contains 2 sets of super lightweight chassis, 4 wheel axles, 2 mouth pieces for inflating the balloons, 8 wheels, 2 balloons, paint strip, sheet of holographic stickers for decorating, 4 mini traffic cones, cardboard ramp, double adhesive sticker, paint brush & detailed instructions. Contents sufficient for making 2 super fast lightweight jet racers 15 cm in length.