GraviTrax Pro: Starter Set Extreme number of players but it takes concentration and

but it takes concentration and coordination to get the rotating magnetic discs to line up just right

craft glue

Launch it and watch it take off

Every detail has been thought out to create a special bond between baby and your little one

to keeping the scores

GraviTrax Pro: Starter Set Extreme number of players but it takes concentration andDiscover the ultimate in marble run fun with GraviTrax Pro: Starter Set Extreme. This pro set allows you to design and build your own marble run tracks, providing endless possibilities for creativity and learning. With high quality materials and advanced features, this set takes your GraviTrax experience to the extreme.