Description:Made of ABS Material, Every component is non-toxic, odorless, burr-free, has no sharp edges and durable. Train set toys for 3 4 5 6 7 years old boys and girls. Really simulate the train operation, operating with sound and music, automatic laying dominoes. Set them up all in a row, and then push one and watch the chain effect of the dominoes tumbling over like a race. This domino rally can also be used as Christmas gifts, Halloween gifts, children\’s birthday surprises. You can also play with your children at home, it would bring children a happy entertainment time.