Lego City Construction Trucks and Wrecking Ball Crane Join your preschooler for a fun build-and-play experience with this LEGO City Construction Trucks and Wrecking Ball Crane (60391) set. Everything kids need to build a wrecking ball crane, dump truck and abandoned house, plus 3 worker minifigures and fun accessories for pretend role play. Kids swing the boom to demolish the abandoned house, then replace the wrecking ball attachment with the bucket to scoop the rubble into the dump truck.