A model haul truck waiting to be assembled so children can discover the secrets of mechanics and engineering! With over 150 components, children will be able to build 2 model trucks with a tipper bed for loading and unloading precious materials, rocks and much more! With manually steerable wheels, the truck moves realistically so children can act out enthralling adventures inside underground mines! The free app contains 3D instructions explaining step-by-step how to easily assemble both models in every phase. An original toy for true fans of mechanics and engines!