Additional Set for the Constructor - GraviTrax. Start&Finish

GraviTrax - experience the power of gravity! GraviTrax is an interactive marble tracking system that you can design and build on your own, experimenting with gravity and learning the laws of physics. The GraviTrax Power Starter & Finish expansion is used for the automatic release of marbles. The elements interact automatically - Finish sends a signal that makes the starter release another ball onto the track.

Note! This is not a standalone game, but an expansion. To play with it, you will need the GraviTrax Starter Set (4005556260997) or GraviTrax PRO (4005556268320).