Gravitrax: Building 33757 Propel the marble through your

Propel the marble through your run by adding the Hammer

Drawing on influences from ancient Greeks right up to modern-day American writers

Build the bridge into your existing layouts and enjoy driving over and under the bridge

Suitable from birth

Gravitrax: Building 33757 Propel the marble through yourExpand yout possibilities! The Building Expansion offers over 25 additional elements to expand your track vertically. You'll increase the action when increasing the height of your run. Experiment with the combination of height tiles, base plates, freefalls, switches and even another level. See how high you can build your track before getting the marbles to the finish. GraviTrax Starter Set required Contents: 2 Base Plates, 1 Transparent Level, 8 Large