Gravitrax Twirl Expansion

Build new routes and create crazy trick shots, expand the marble run with new ideas, expansion sets to keep the ball rolling compatible with all GraviTrax & GraviTrax PRO sets & accessories
Experiment with gravity to power your ball through twists, loops and turns in a race to the finish line great building game for boys & girls
A GraviTrax Starter Set is required to use expansion packs & accessories. No batteries required. Other accessories sold separately.