Abracadabra, presto, chango your marble run just added some colorful, magical fun with the GraviTrax Color Swap accessory!

Bring a new element of surprise into your GraviTrax marble run! As if by magic, the marble changes color as it passes through the Color Swap. Simply hide a marble within the tunnel the momentum from the incoming marble propels the hidden marble out the other side with the illusion the marble changed colors! Its a snap to combine Color Swap with any GraviTrax Starter-Set to experience the power of gravity and educational fun today!

What makes a great toy? GraviTrax checks all the boxes! Its a creative, modular, expandable track system that challenges children to use their imagination to design and build their own marble runs! GraviTrax construction sets use STEM-friendly concepts while building critical thinking and problem-solving skills. Completely open-ended, every GraviTrax set has a boredom-busting variety of play options for hours of fascinating fun. Once the basics are mastered, simply add expansion sets and accessories to propel those metal marbles around the tricked-out track of your dreams!

Comes complete with instructions, 3 Color Swaps and 3 marbles (red, blue, green).

Lasting durability for girls and boys ages 8 and up, its the learning toy children (and savvy adults) return to over and over again!