Bring the world of construction to life for kids who love to see how things work. Youngsters with a passion for vehicles will enjoy building this LEGO® Technic™ Concrete Mixer Truck (42112). With 8 robust wheels, a moving motor, opening driver’s cab and large mixing drum, it looks just like the real thing. Kids can turn the drum manually or set it to automatic to see it turn as they push the truck. When they turn the drum counterclockwise, they'll see the concrete unload.