The Sakura Gelly Roll Pen is the world’s leading gel writer, thanks to its unique ink formulation with water-based pigment. The exceptional gel ink technology ensures smooth writing results without the need to apply pressure, and will leave even, defined lines when writing or drawing. It is not only a writing product, but extremely well-suited for different creative applications. Sakura has now implemented the smooth ink flow technology of Gelly Roll? White to three nib sizes: fine, medium and bold. Colors-White,Black,Blue,Red,Green,Royal Blue