Truck Carrier: The truck carrier includes a two-tier trailer and three small cars. The trailer is designed to storage the mini cars. There is a slides-out ramp so that micro vehicles can get off. Truck Carrier: The main truck carrier is a two-tier trailer that is designed to house the trucks and the mini car. There is a ramp that slides out so that the mini vehicles have access to roam across the ramps. Easy To Install: Use the screwdriver to build cars and hear the click sound when the tires are properly installed to the trucks. Easy and quick. It can improve your manual skills. Learning Toy: Through play with this toy car, your kids can learn vehicle function and cognition and improve their brains. Your kids can play with their friend and family members, which can improve communication skills. Perfect Gift:This car toy is made of safe and child-friendly material, smooth edge without burrs. Your child will very be excited while he/she receives such a cool toy set for birthday, holiday, back to school and so on.