Gravitrax Looping Expansion

Send your ball for a loop! With the loop you can turn the word upside down. Combine the looping with your GraviTrax starter-set for even more action and excitement. How much speed does your ball need to Loop The loop? With the GraviTrax interactive track system and marble run, you can design and build your own race tracks and experiment with gravity, magnetism, and kinetics to propel your ball to the finish. With a variety of tiles, levels, tracks and features, you can control the speed of each ball.