Open up endless possibilities for your toddler to make a cool track for any new or existing DUPLO train set with these LEGO DUPLO train tracks. With level crossings, stops, switches and a combination of curved and straight track pieces there is so much they can do! preschoolers will also love to place the red action brick on the track and make any compatible DUPLO train (including 10874 steam train or 10875 cargo train) stop when it reaches it. Ages 2 - 5.