Protector of the universe, Mecha Strike is a mighty coaster ready for any builder! The K'NEX Thrill Rides Mecha Strike Roller Coaster Building Set comes with 577 parts and pieces, including a motor and chain lift with a coaster car. Kids can create a motorized, moving roller coaster that stands over 2 feet tall! Easy-to-follow, step-by-step building instructions are included, recommending for children ages 9 and up. Unleash your kids' creativity as they make their own designs for open-ended fun! Help your kids develop a better understanding of STEAM (science, technology, engineering, arts, and math). As they click the parts together and discover how the building system works, they strengthen hand-eye coordination, fine motor and problem-solving skills, and spatial awareness. K'NEX rods and connectors are tested to the strictest quality and safety standards to ensure that your child has a successful, trouble-free building experience.