Gear up for action with this bumper construction set. Ideal for nurseries, early years, kindergartens and reception classes. Children create a structure by assembling the easy to use squares and triangles. Gears are added by simply pushing them into place. They ingeniously mesh together either on a flat surface or at an angle of 90 degrees. Once connected, just turn one gear and see the rest of them rotate! A must for all early years and special needs environments. Contains 58 pieces (24 squares, 4 equilateral triangles, 10 gear squares and 20 gears) in 4 colors. Squares measures 21 x 21cm (8.27 x 8.27 inches). The large and chunky pieces enable children to easily construct really large models.