Brand: uni Lead Diameter: 0.28mm Ink Color: Black * This pen features the world's smallest 0.28mm ultra-fine tip in the oil-based ballpoint pen category, making it ideal for writing in small spaces like planners. * The "point tip" shape, which tapers towards the pen tip, makes the written characters easy to see and provides a precise writing feel similar to that of a drafting mechanical pencil. * By adopting a metal refill with a "point nose" shape that places the center of gravity at the pen tip, the design allows for stable and smooth writing with light pressure. Only used for a single test write.