Build the beast. This LEGO® Technic™ Liebherr Crawler Crane LR 13000 (42146) towers at nearly 4 feet high—basically a skyscraper made of bricks. It's packed with realistic features: tank steering, rotating turntable, luffing jib, winch, and load sensing. Download the CONTROL+ app to command this mighty machine like you actually know what you're doing. Includes 2 smart hubs and 6 large motors. Fair warning: your coffee table will never be the same. Perfect for adults who think bigger is always better.