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 components to be assembled, including differential, rack-and-pinion steering, and Cardan joint.   You can discover and build 10 fantastic and dynamic models. Thanks to 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   What's in the box 200 x Interchangeable Components (Which can make 10 Different Models),1 x Levers1 x Gears1 x Instruction Manual