The ingenious constructions of Leonardo da Vinci: with these simple sticks one can create a dome and a bridge, which stand without glue or a cord and without a nail or a screw! Admittedly, one needs a quiet hand and some finesse to set it up. Instructions for dome and bridge included. The beauty of it is, that you can start with one or two modules, which can then be extended step by step to become a larger bridge or dome. Combine the Sticks with other building blocks, creating stairs, bridges, houses, and other buildings! 100 colored sticks in wooden box. Materials: lime wood, non-toxic water-based color stain, box plant-based oil finish. Size: Stick L=18cm.