Domino train, dominoes can be placed automatically, with light music, the locomotive chimney can be fine-tuned left and right put the dominoes into the card clip, it could go around with automatic pendulum dominoes. Our Domino Train Blocks Set is made of high-quality plastic, each edge of dominos with circular arc design is smooth polished without burrs, making the dominos smooth to touch. You can keep it for a long time. *Develop kid's fine motor skills* Perfect for toddler's color recognition, hand-eye coordination ability and great for fine motor skills. Kids can use the blocks to make different arrangement and they will not stop playing with the blocks. They will like the bright colors! Good for kids imagination. *Run smoothly, not easy to get stuck* Your kids have to manually place each domino into the stack when playing it. It may take some time, but it would improve children's practical ability and cultivate children's patience. when the train is running, it is very smooth and will not get stuck.