The Uni-ball Signo RT1 UMN-155 Gel Ink pens provide you with ever smooth writing experience and for a very good reason. They come with one of the Uni-ball’s innovative design of the pen tip. In order to reduce the friction against the paper, the tip is rounded and made edgeless, so that the feeling of smoothing writing can be achieved. This pen series are also produced in a wide range of vibrant ink colours and two different tip sizes, i.e. the fine 0.5mm and extra fine 0.38mm, both of which writes slim and vividly coloured lines. The pen body design perfectly matches the style of the tip design in terms of smooth surface and vividly coloured barrel matching up with its ink colour. The smooth feeling rubber grip blends seamlessly into the pen barrel making you feel comfortable and sturdy to write with. The gel ink is also of the highest quality which is acid-free, fade-resistant and fraud-preventative.