Purchased 4-5 years ago and used only a few times, but currently, about 12 pens are not flowing ink well. One of the 12 (crimson color) barely works. Please purchase only if you don't mind this. [Brush Size] Size: Diameter 10mm x H150mm, Weight 8g [Ink] Water-based dye, 24 colors [Case] Size: W260 x H155 x D13mm, Weight 223g [Specifications] Can draw fine lines, thick lines, and solid lines, and can be blended with water. [Materials] PP, PA [Country of Origin] Japan Pens Color pens Paint Arts and crafts Drawing Illustration Coloring book Colored pencils Drawing Brush pens