This 181-piece set features instructions for 8 dynamic, moving models. Create machines and vehicles! Or, experiment with open-ended engineering creations. Watch youngsters learn the art of pattern making and applying colors to 3D creations. With 17 different shapes and 10 bright colors, this set offers endless creative possibilities. Extend your collection with these twisting, turning models. The components in this kit are durable, and the assembled models are sturdy enough for playtime. Explore cause and effect while teaching children that actions and design affect outcome. Develop curiosity, attention to detail and intentional play. Use these connecting cubes and gears to practice early engineering concepts, geometry, measurement, problem-solving and reasoning. The parts are also compatible with 2 cm Linking Cubes. Includes: 4 small gears, 4 big gears, 30 cubes, 8 double cubes, 4 quadrants, 4 triangles, 4 shafts, 10 rods, 6 supports, 4 small supports, 8 brackets, 4 joints, 4 sockets, 20 bearings, 4 wheels/tires, 50 chain links and 1 base. For ages 6+. Size of large gear: 3.5"L. Size of linking cube: 0.8"L.