Description: - Eco-friendly alloy material and high quality. - Very classic and quite interesting. Good for creative thinking and improve your IQ. - After getting each puzzles solved by yourself, then you will get achievement. - It is specially designed to test your brain,helps with practicing concentration and focus. - Great gift for adults and children, kids, for fun party games.Specification: - Material: Alloy - Recommended age: >5 years old - Color: Please refer to the picturePackage Includes:1 × IQ Test ToysNote:Please allow slightly 0-1cm difference due to manual measurement.Colors can appear different depending on light and how the listing is viewed.Thanks for your understanding and attention. Wish you a pleasant shopping experience!