Gel ink roller with vibrant color. Gel pen for drawing and writing. Waterproof, lightfast pigment ink. Ball diameter: 1.0 mm, line width: 0.5 mm. Bright on both light and dark paper. Color: Black. Packaging unit: 1 piece. Innovative and proven writing instruments for everyday use. The company Pentel was founded in 1946 and initially focused on the production of watercolor and oil paints as well as drawing pencils for kindergartens and schools. Numerous achievements in the world of writing and drawing products are attributed to its own research and development laboratory. Examples include the first 0.9 mm fine lead for mechanical pencils, the first fiber tip pen "SignPen," the first gel roller "Ball Pentel," and the first correction fluid with a writing tip instead of a brush. For over 70 years, Pentel has been continuously working on new developments and improvements that make our daily lives easier, especially in writing, drawing, and painting.