GraviTrax TipTube Expansion Marble Run

Stop, collect, and release the marbles with the tip tube! Perfect for racing, the tip tube gathers the marbles in a tube and releases them down a different track all at once When the weight of the marbles is too much. This accessory also includes 6 additional tracks and must be combined with the gravitrax 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 exper…