Only need some sand you can create your own construction base. 3 inch metal casting engineering vehicle modelincluding:DumperBulldozersForkliftTank TruckAsphalt Car and Excavator have independent packaging. Manufacturered by Halloluck. Its safety and health to use of high-quality ABS plastic + alloy and other materials. Be able to simulate the transport of construction sites carrying sand and other materials Don't need battery driven an environmental protection toy.