You will never going back to your dull old pen once you start use Style Fit!

The Style Fit ballpoint refills contain Uni-ball’s popular Jetstream ink, which is known for its extraordinary smoothness. It is a low-viscosity, oil-based ink that is light-resistant, water-resistant, and dries quickly. To learn more about Jetstream ink and the pens that use it, read our article on the Uni Jetstream. Ballpoints use less ink than gel, so you may want to choose this kind of refill if you are concerned about using up refills quickly. The Style Fit ballpoint refills are available in three colors and three tip sizes.

The 1 mm Style Fit ballpoint refill lays down a thick line that is so smooth it almost feels like the pen is helping you write. Its colors are the most vivid of all the ballpoint sizes. Try this size if you have larger handwriting or enjoy exceptional smoothness.