MUJI MUJI 3-Color Ballpoint Pen Barrel - 1 Barrel Only - Discontinued This barrel allows you to insert three ink colors and features a simple, minimalist design. It's lightweight and easy to use. It was a popular item, often featured as a "must-buy" MUJI product, but it has now been discontinued. If you have any questions or would like to request a price reduction, please comment. 504