Experience the power of gravity! GraviTrax is the all new STEM track system from Ravensburger! Use your imagination to build superb tracks and set the
GraviTrax Jumper ExpansionLift the marble to a higher level while simultaneously creating a path for a trailing marble to continue it's journey on the track below.Move up a level! The Jumper lifts your marble to a higher level and at the same time creates a transit tunnel. Combine the Jumper with your GraviTrax Starter-Set for an exciting addition to your marble run.
GraviTrax Jumper
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snippet) Gravitrax Expansion Tunnels Review by Marble Grooves
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GraviTrax add-on set fun - AD sent for review - Over 40 and a Mum to One