Engineering Building Set Is To Design Your Own Toy – Create Cars, Robots, Machines and More – Learn Spatial Reasoning – Stimulate Problem Solving Skills – Unleash Creativity and Imagination - Educational Construction Toy Blocks Building Set Perfect For STEM Projects, Classroom Activities And Family Games, Ages 3, 4, 5, 6, Years and Up. - Engineering Building Set Includes 40 Connecting bolls and 8 Big Squares 4 Rectangles 4 Long Triangles 5 Small Triangles 8 Extra Long Connectors 24 Long Connectors 48 Medium Connectors 20 Small Connectors 4 Wheels 4 Wheels Connectors Storage container (10. 5" x 7. 5") Idea Guide Great Gift for Birthday and Holidays for Boys & Girls. - Original - By Play22