This 122-piece set features instructions for 8 models. Follow our activity guide to create vehicles and machines. Or, experiment with your own engineering creations. Watch youngsters learn the art of pattern making and applying colors to 3D creations. With 16 different shapes, this gear toy set offers endless creative possibilities. 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. This gears toy is compatible with 2 cm Linking Cubes (Amazon # B014V1D4R4). Includes: 6 small gears, 2 big gears, 28 cubes, 8 double cubes, 8 quadrants, 4 triangles, 6 shafts, 2 rods, 10 supports, 8 brackets, 2 joints, 2 sockets, 20 bearings, 4 wheels and 4 tires. || For ages 6+. || Size of large gear: 3.5"L. || Size of linking cube: 0.8"L.