Stimulate your child's imagination the fun way with the K'NEX Imagine Click & Construct Value Building Set ! With 522 classic K'NEX pieces, this building toy gives children a resource for learning and enjoying themselves at the same time. The K'NEX building system contains plastic rods and connectors that join up with a satisfying "click"! They can be assembled to create working vehicles, animals, moving structures, buildings, and just about anything else your child can imagine. With 35 included building ideas, the instructions manual guides young engineers toward amazing creations.