The Quercetti mini rail marble track is a beautiful set, consisting of 150 parts. A roller coaster with a maximum length of 8 meters. This marble track has been carefully designed. By using different sizes of marbles and materials, children will make interesting observations, experiments and discoveries in the world of physics (speed, gravity, friction). All this makes it a marble track of exceptional and unique educational value that guarantees hours of fun. Includes marbles and a detailed instruction booklet. Suitable for children from 6 years.