Let your kid enjoy childhood adventures with the K'NEX Infinite Journey Roller Coaster Building Set!This roller coaster set can reach approximately 2 feet in height. It has a total of 347 colorful pieces, including rods, connectors, a coaster track, and a battery-free orange coaster car with a slingshot launching mechanism. Since STEAM (science, technology, engineering, arts, and math) powers the fun of every K'NEX building set, the K'NEX Thrill Rides Set helps improve children's STEAMagination. Building with K'NEX puts children on a path toward a fundamental understanding of STEAM subjects-something that will help them throughout their lives.The increasing demand to own smartphones and tablets has also increased the risk of unproductivity for kids. The K'NEX Roller Coaster Building Set is a toy with developmental benefits, making it a perfect hobby for children. K'NEX supports key areas of a child's growth. As they click the different parts together and discover how the system works, they're strengthening their hand-eye coordination, fine motor skills, problem-solving skills, spatial awareness, and imaginations!K'NEX is also committed to quality. The rods and connectors are responsibly made in America at a landfill-free, zero-waste green manufacturing facility in Hatfield, Pennsylvania. We test to the strictest quality and safety standards, ensuring that your child has a successful, trouble-free building experience.