Ravensburger GraviTrax Starter Set Speed - Marble Run, STEM and Construction Toys for Kids Age 8 Years Up - Kids Gifts (26977)

• Innovative – gravitrax is a modular, electronic-free interactive track system where you can design and build your own race tracks and experiment with gravity, magnetism, and kinetics to propel your ball to the finish.

• Country of origin: CZ

• Model: 26977

• Brand: Ravensburger