Marble Run: 123 Piece Set (103 Durable Pieces and 20 ) STEM Building Set for Kids

No Hassle Creations: Marble Run is a favorite among youngsters and is the perfect introduction to marble runs with pieces that go and pull apart with ease. Toys that Teach: Exercise your hand-eye coordination and spatial skills while putting your imagination to the test. This is a great way to introduce children to trial and error. Creative Play: Build a Marble Run track that , turns, races and spins at incredible speeds! Endless Possibilities: These brightly colored chutes, tubes, drop-throughs, merry-go-rounds and spinners stack and click to hours of engineering fun. Includes: 103 durable pieces and 20 . (Ages 4 and up)