Uni-Ball One F Limited Color Gel PenThe Uni Ball One F, the same pigment ink is utilized in the Uni Ball One pen body reimagined in subtle toned faded colors meant to blend in to your everyday life and with a metal tip, giving the Uni Ball One F a lower center of gravity when writing. Because of this increased stability from the metal tip, this pen is even more suitable for use in studying, taking notes and writing long journal entries since you can write with consistent ink flow even