The track extension kit doubles the number of tracks already in the starter kit. Key features • The intelino rails allow the train to run at maximum speed • The rails can be used in both directions • Built-in color-coded slots make train programming quick and easy. • Easy-to-connect rails make track construction easy too in young children. • The rails are made of wonderfully light and durable ABS plastic. Package contents • 20 tracks (12 turns, 4 straight, 4 two-way) • 40 color - coded blocks (10 white, 8 green, 8 red, 6 blue, 4 yellow, 4 purples)