The crane's boom arm is extendable and its outriggers can be displayed, deployed or compactly stored. The hydraulic cylinders can also be moved in accordance with the movement of the boom and outriggers. This model is also convertible from a compact folded form for storage to its deployed form without the use of additional parts. A cable for attaching the hook of the crane is included as well. Split up into green and grey runners, this kit is easy to create and enjoy!