Magformers Curve Set 50 Pieces Authentic. All pieces are stamped. This set is a well-balanced collection of hard-to-find curved parts. It's a valuable product that is no longer in production. The outer box has scratches. Also, the instruction manual has been reinforced with tape. Please check the condition in the photos✩.*˚ Although it is a used item, I think it is in relatively good condition. Since it has been played with by a child, please forgive any general used item dirt, etc. From the following site: --------------------------- You can create works with curves, such as circles and spheres. By adding it to the Basic series, you can create more dynamic and concrete shapes. In addition to shapes with corners, such as triangles and squares, you can also create circles and spheres, making it recommended for elementary school children who are starting to learn arithmetic. By touching figures and three-dimensional objects with their own hands, their understanding of "shapes" will deepen.