Made of the high-quality and non-toxic ABS material, they are durable and safe, which allows your kid to play freely with them again and again. There are five engineering vehicles in this toy set, including the excavator, crane, cement mixer, dumper, and container truck. They are the perfect gifts for those kids who are over 3 years old. It will appear dynamic sound and dazzling light through controlling its remote controller, more interesting and realistic. Their colors are vivid and bright, which can promote the kid\'s abilities of hand-eye coordination and sensory perception. 2.4GHz transmission technology, remote control distance up to 25m, easy to control, provides your kid with the great and wonderful playing feeling.