GraviTrax – Flextube (extension set)

GraviTrax is a unique marble-run system featuring hexagonal risers and track tiles that simply fit and stack together, rail tracks that hook into place, and stunt pieces that add exhilarating action.

Each of these four Flextubes twists at the center to send your marbles rolling either down or up in almost any direction.

Add an extra twist of versatility and maneuverability to your GraviTrax creations with the GraviTrax Flextubes!