Gravitrax – Action Pack FlexTube

The FlexTube flexibly connects different heights. By turning it slightly, the
FlexTube can be brought into a wide variety of shapes in 60-degree increments.
Whether U-shape or S-shape, the FlexTube adapts exactly to the respective
situation on the track. Combined with a starter set, speeds on the track can be
controlled even better. In order to bridge even more height in the future, the
expansion also includes 4 height stones. In how many different places on the
ball track can the 4 FlexTubes be installed?