Fun Assembling-This set DIY creative assembling toys includes excavators, road rollers, soil drills, and bulldozers. 4 engineering vehicles can be assembled freely. Use the attached screw tool to disassemble and assemble the engineering vehicles. Explore the fun of assembling In the process, cultivate concentration, exercise children's hands-on ability and thinking ability, and transform into hands-on little masters. Construction toys for Kids age 2-4, let's become little engineers together Creative Thinking-This toy car for kids age 3 4 5 can be disassembled anytime, anywhere, so that children can use their hands and brains. By assembling the construction vehicle, it promotes thinking and logic. The cute construction vehicle shape, the 4 construction vehicles have their own strengths, Excavation, bulldozing and transportation, etc., can simulate the operation of the project, let children experience the joy of project construction, and bring children a world of fantastic ideas. Learn & Playing-Children can recognize the colors and the name and purpose of the engineering vehicle during the playing process, which is very suitable for assembling games or small competitions with friends. Different types of vehicles can interchange the body and free assembling parts.Guide the children to assemble the engineering vehicle. At the same time teach the kids related knowledge, stimulate the child's interest and promote the relationship with the child.