Quercetti Jurassic Skyrail - 127 Piece Dinosaur Themed Roller Coaster Building Set - Great Beginner Marble Run for Ages 4 + (Made in Italy) Build up to 13 feet of spectacular suspended tracks, which then serve as a setting for prehistoric adventures with your favourite dinosaur. Skyrail Jurassic was designed to be used with big transparent balls, with dinosaurs inside: so you can make interesting observations, experiments and discoveries in the world of physics. This entertaining marble run is geared towards a younger audience, with over 100 pieces and 3 different types of rails. A great introduction to principles like momentum and velocity. Contents include: 18 curved tracks, 16 pillars in 2 colors, 12 joints, 30 track connectors, 29 supports and junctions in 2 colors, 6 base pieces, 14 straight tracks and 2 marbles with dinos inside. Recommended for ages 4 and up. Experiment with marbles of any size! Can be combined with other Quercetti Sky rail marble systems (sold separately). Proudly manufactured in Italy.