Build a bulldozer and 9 other types of construction vehicles with this exciting building set from Clementoni. The models work without batteries and feature over 200 interchangeable components, including gears, racks, differential gears, worm screws, spiked tyres, bars, and panels. The bulldozer's bucket can be lifted using a worm gear mechanism, and the vehicle's direction can be changed by turning the steering wheel. The included instruction manual guides children through building the models and introduces them to the fundamental principles of mechanics and engineering. Enhance the building experience with the free app, which offers 3D interactive instructions and reveals numerous other applications to discover and construct. This set is suitable for children aged 8 and older and is proudly made in Italy.