The GraviTrax Tunnels Expansion comes with 4 tunnel-curves, 2 tunnel-straights, 2 tunnel-switches, 2 vertical U-turns, 2 Bernoulli-rails, 2 O-rails, 2 catches, 2 base plates. The perfect accessory for curious kids aged 8 and up looking to add some flair to their starter set.
GraviTrax is a modular, electronic-free interactive track system where you can design and build your own marble runs. This STEM toy for boys and girls 8 and up, encourages experimenting with gravity, magnetism, and kinetics to propel your marble to the finish. Designed with open play in mind, the concept offers endless possibilities to design a different track every time you play. Expand your builds and add some action with a variety of expansion sets and accessories.