A complete set to discover the secrets of 2 powerful machines! Instructions are included for assembling two dynamic models: 1 buggy and 1 quad (ATV type). A scientific set to learn everything about off-road vehicles and internal combustion engines. It contains more than 130 components, such as: differential, gearbox, gears, rims, tires, wheels, rods, pulleys, and more. Follow the instructions in the illustrated manual, filled with step-by-step assembly instructions for the model, or download the free APP with interactive 3D instructions for all models. You will find 1 model to assemble according to the instruction manual or the APP and 1 model to assemble according to the APP. The App is compatible with ANDROIDTM, APPLE, and AMAZON. Made in Italy. The Learn and Create Build series promotes STEM (Science, Technology, Engineering, Mathematics) topics for the development and encouragement of children's knowledge in these fields. By conducting experiments, children improve their skills and are introduced to the world of science and technology. The toys in the Learn and Create series hold a leading position in the category of scientific toys, providing rich equipment, detailed information, and instructions for conducting impressive and safe experiments and constructions, thus giving children the opportunity to learn about the sciences. It is an innovative series of toys with which children will have fun conducting experiments, using scientific tools, discovering physics, chemistry, astronomy, biology, botany, as well as major scientific and natural phenomena. The Learn and Create toys are the most creative, enjoyable, and safe way for children to learn the secrets of Science!