Gravitrax Extension Ball and Spinner it is the one-pot-stop for

it is the one-pot-stop for all of your special gatherings

The Crystal Clear™ will automatically turn itself off when it reaches its boiling point

they provide a "home away from home" that is comfortable and safe

Blast off into outer space as you scratch your way through the solar system

He built it

Gravitrax Extension Ball and Spinner it is the one-pot-stop forLaunch more marbles with the GraviTrax Balls & Spinner and up the odds on your races! With the spinner up to six balls can be started at once. Watch as the marbles are sent on a race through your tracks. This extension allows you to build up to six different track courses. Combined with the Starter Set, you could have up to nine different tracks launched at once. How many marbles will you race? What makes a great toy? GraviTrax checks all the boxes!