FeaturesGel ink rollerball Stainless steel tip for precision writingRubberised comfort grip for effortless writingLine width - 0.4mmInk Colour: BlackThis Uni-Ball Signo Gel Grip Rollerball Pen (Pack of 12) features high quality gel ink, which is fade resistant, water resistant and tamper proof. The medium 0.7mm tip writes a 0.4mm line width for everyday use. The pen barrel also features a window for monitoring remaining ink levels and a rubber grip for comfort. This pack contains 12 pens with black ink.