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 0.5 mm Style Fit ballpoint refill produces a smooth and consistent line that appears slightly thinner than the gel refill of the same size. Its colors are bright, although not as bold as the gel option. This size is a good choice for people who prefer the writing action of ballpoint but have small handwriting.

The 0.7 mm Style Fit ballpoint refill writes very consistently and glides across the page. Although ballpoints are often considered to be too tiring for long-term writing, we have a hard time imagining this refill wearing your hand out. Its colors are about as bright as the 0.5 mm size. People looking for a happy medium of smoothness and line size should be pleased with this size.

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.

Yes, it will fit into any Style-Fit holder!