Help young LEGO builders understand the basics of gears . force and movement with the LEGO Technic 42097 Compact Crawler Crane stem toy. This detailed and robust construction toy crane comes with an array of realistic truck features and functions. The Crawler Crane building set folds into a compact vehicle that travels on rugged crawler tracks and comes with a classic yellow and black color scheme with authentic sticker detailing. This tool set for kids also allows you to rebuild this 2-in-1 cool crane toy to create the LEGO Technic Compact Tower Crane.