Dive into a world of prehistoric adventure with the new K'NEX K'Nexosaurus Building Set! That's right, everyone's favorite K'NEX dinosaur is back and better than ever with new green color tones that makes him even more realistic and fun. This exciting building set comes with over 200 pieces, allowing you to build your very own dinosaur model with amazing detail. Hook your dino up to the included motor and watch as he comes to life before your very eyes! Ideal for children ages 7 and up, this K'NEX set provides hours of creative fun and imaginative play. 2 ALTERNATE BUILDS This K'NEX set comes with 2 dino-tastic builds. Assemble one, then take it apart and build the other. There's no end to the fun! 255 PIECES INCLUDED There are 255 high-quality parts and pieces in this set, including rods, connectors, and wheels that are specially designed to click together. MOTORIZED MOVEMENT Watch your models come to life with motorized movement using the battery-powered motor. Requires two "AA" batteries. DOWNLOADABLE INSTRUCTIONS Use the easy-to-follow instructions to guide children through their building conquests. Unleash your kids' creativity as they make their own designs for open-ended fun! STEM/STEAM TOY Not only is this set fun to build, but it's also educational, promoting STEM learning by teaching children about engineering and architecture.