Quercetti Skyrail Ottovolante Maxi Build your own skyrail with this set from Quercetti. Follow the examples from the instruction book or let your imagination do the work. The marble track contains various playful elements, making it extra fun to follow the marble as it rolls across the track. Specifications: Packaging dimensions: 52 x 41 x 11 cm Track length: 20 metres Marble diameter: 19 mm Material: plastic Suitable for children aged 8 and over. Contents: 401 Track parts 8 Marbles 1 Instruction book