LEGO Technic Compact Crawler Crane 42097 contains 920 pieces and features extendable outriggers that move sideways and vertically, a telescopic boom, hoist with cable and safety lock, and a superstructure capable of rotating 180 degrees. The vehicle travels on tracks and can fold into a compact configuration. It is a 2-in-1 model that rebuilds as a compact tower crane. With the boom and outriggers extended it measures approximately 51 cm high, 49 cm long and 40 cm wide.