Let your children expand their imaginations by designing and building their own chomping sharks with the K'NEX Beasts Alive Robo-Jaws Building Set ! This three-in-one building set comes with 136 colourful and durable classic parts and pieces. Your children will see their ingenious creations come to life, as these pieces include a battery-powered motor that allows the chomping sharks to actually move! These shark models are built using K'NEX rods and connectors that feature vibrant colours and premium-quality construction. Just download the instructions online and follow the easy step-by-step building guidelines.