Perfect for continuous writing. How can you use your pen for an extended period? Many pens can be reused with replacement refills – a big plus for the environment. Especially when the refill fits the pen perfectly and writes smoothly, like these gel pen refills from Uni-Ball. This refill will impress you from the very first line. The gel ink allows the pen to write effortlessly, and its design ensures that the ink flows freely and precisely. This means there are no skips while writing, and the color retains its vibrancy without fading even after years. Many pens scratch the paper after prolonged use, which can be quite annoying. Not so with this gel ink. Additionally, the user-friendly refills can be swapped out in seconds and used for months.