The ingenious constructions of Leonardo da Vinci: With Grimm’s Leonardo Sticks children 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. Combine the Sticks with other building blocks, creating stairs, bridges, houses and other buildings! 100 coloured sticks in wooden box. Materials: lime wood, non-toxic water based color stain, box plant based oil finish. Size: Stick L=18 cm.