Uni-Ball AIR Micro, 0.5mm Fine Rollerball, Pack of 18, Black (18)

I've been a repeat buyer of these for years. They have some unique characteristics that aren't found elsewhere. 1. Variable line width and darkness depending how hard you press and the angle of the pen. 2. Extremely light lines can be made by skimming the pen. Few rollerballs do this. 3. Extremely fast and light crosshatching or filling in...more like a fountain pen. 4. Very reliable pen flow in old pens that have sat in a drawer waiting to be used. One caveat: unlike most rollerballs, this type of pen will happily continue to stain your shirt or pants if it gets uncapped inside a pocket. The ink will flow and flow, and it's impossible to clean. Since it's a cap not a click pen, this will assuredly happen if you use this one as a normal writing and work pen. This is an art pen, not a work pen as uniball sells more appropriate pens for that usage.

I like this pen as it's smooth, and doesn't smudge. When writing notes for work and need to stop to highlight, no smudging.

I love these pens, they write very smooth.

15 years later and I'm about ready to Buffet buy a lifetime supply. It is a great writing and drawing pen. The dry time is quick but not instant, so smudging is something to be mindful of. Over the years I've handed out plenty as most people that borrow one like it a lot.

I love these pens. They offer a very smooth writing experience and the ink dries quickly. The feel as I write is similar to a felt tip pen, as is the ink, but it is a roller ball. It's unique and I enjoy it a lot. I got these because they were recommended for people who tend to grip pens and press too hard while writing. These do help me lighten my grip and pressure and reduce hand fatigue effectively for me. The main thing to be aware of is that the ink will probably bleed through typical notebook or legal pad paper. I like to use a thicker paper generally, so this isn't a huge issue for me. If you're a college student using standard notebook paper for note taking, the ink may cause bleeding issues for you.