The Ravensburger GraviTrax Starter-Set is a 124-piece marble run set designed for building and creating unique pathways for marbles to follow. Made of plastic and metal, this STEM-themed toy is suitable for ages 8 to 99. The set includes everything needed to build and customize tracks, providing countless hours of fun and creativity for children and adults alike. The GraviTrax Starter-Set is a perfect gift for those interested in science, technology, engineering, and math.
eBay