This incredible technology laboratory helps you get closer to the world of mechanics and engineering as you build a powerful Monster Truck! This kit contains more than 200 parts to be assembled, including: differential, rack-and-pinion steering and Cardan joint. You can discover and build 10 fantastic and dynamic models! With the illustrated manual, your child will be guided step-by-step through the building of 10 different models as they discover the fundamentals of mechanics and engineering.