For use with our Marble Run, this 21-piece add-on set lets you build even more complex marble circuits. Recommended Ages: Ages 4 to 10 Availability: In Stock
Author: Dawn BleyleRating: 5 out of 5 starsBoth my kids love it, especially the clear tubes.
Author: David BattinRating: 5 out of 5 starsIt's great. Just what i expected.
Author: JanRating: 4 out of 5 starsWe already had this marble run, so ordered just the add on. It was a great addition. I don't know why marble runs are so fascinating, but this toy has had years of staying power for our 6 year old.