Stop, capture, and release! Round up your marbles with the “GraviTrax Tip Tube” and set them free again! Perfect for shaking up a race, the “Tip Tube” collects 3 marbles and automatically restarts them down the track at the same time. Since all sets are open-ended, it’s a snap to combine accessories with any “GraviTrax Starter-Set” to create unique action in your marble run. How will the “Tip Tube” affect the outcome of your race? Experience the power of gravity and educational fun today!