This 181-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 17 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 (sold separately). 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 links and 1 base. For ages 6+. Size of large gear: 3.5"L. Size of linking cube: 0.8"L. CREATE DYNAMIC, MOVING MODELS --This 181-piece set features instructions for 8 dynamic machine and vehicle models. Follow our activity guide or experiment with your own engineering creations!. EXPLORE CAUSE AND EFFECT -- Use these gear models to teach children that actions and design affect outcomes. Develop curiosity, attention to detail and intentional play. HIGH QUALITY -- The pieces in this kit contain more raw material than some other gear products on the market. The components are durable. And the assembled models are sturdy enough for playtime. 15 COLORS AND 17 SHAPES -- Watch youngsters learn the art of pattern making and applying colors to 3D creations. With 17 different shapes, this gear toy set offers endless creative possibilities. EXTEND YOUR LINKING CUBE COLLECTION -- This gear toy set is compatible with 2 cm Linking Cubes (sold separately). Extend your collection with these twisting, turning models. Age: 6+ years/Grade 1+