The K'NEX Beasts Alive K'NEXosaurus Building Set offers you and your children a chance to experience the amazing world of dinosaurs by creating your own - bring the Jurassic Era to life in your home! Build a K'NEXosaurus Rex with the 255 vibrant parts and pieces included in this set. All parts are well-constructed plastic. The package also includes iconic rods and connectors that snap together to make customizable figures. Children can also make alternative Beasts Alive structures with this set. It includes an additional model for a Megasaurus dinosaur. Watch your K'NEX Imagine K'NEXosaurus Rex come to life with the battery-powered motor to operate the structures.This building set also has downloadable step-by-step instructions for two motorized builds. Age:7+ years.