Hm, let´s see. If you put the wooden cylinder in one of the tubes, how shall you then place the other pieces in the two other tubes? Why not build a colourful tower and then start all over again by putting all the pieces together in another way. An excellent educational toy ideal for developing motoric skills and logical, Playful thinking. This sorting and puzzle play can be varied in many different ways. The item measures 5cm in diameter x 6.4cm. Suitable for ages 12 months and up. Manufactured to BRIO's high standards and from FSC Certified wood