Build STEM-driven models, such as DJ Bubbles (an octopus spinning records), a pterodactyl, a yeti, and much more! Kinetic sculptures, or automata, are mechanically engineering toys that move when you crank the handle on the side. They move through a series of axles, cams, and cranks that work like the pistons in an engine. Each model includes a papercraft character that you fold and link with LEGO elements.For Ages: 8+WARNING: Choking Hazard; Small Parts. Not for children under 3 years old.