Gravitrax ® power element trigger - marble track

Ravensburger's interactive ball track system. As soon as a ball rolls through the POWER Trigger action element, a signal is triggered. And you can customize what reacts! Will it trigger the Start to send a new ball onto the track, reset the lever, or activate the Switch? You're in control! With the GraviTrax® ball track system, you can playfully explore gravity, and with various expansions, it can be expanded for endless building and play fun! Add even more speed with the expansion sets.