Experience the power of gravity! GraviTrax is the all new marble run track system from Ravensburger! Use your imagination to build superb tracks and set the gravity spheres rolling! Stop, collect, and release! Round up your marbles with the Tip Tube and set them free again! Combine the Tip Tube with the GraviTrax Starter-Set and create unique action in your track system. Infinitely Expandable, the Gravitrax in fully expandable with a large range of expansion pack and accessories! An amazing building toy! Develop your childs critical skills, playing and building with GraviTrax builds spatial reasoning and planning skills, and provides a great stealth learning experience. How long can you pause your marbles with the Tip Tube? Contains: 1x Tip Tube Base, 1x Long Rail, 2x Medium Rails, 3x Short rails Suitable for ages 8+