This is a fun refill! The line is super broad, easily rivaling a liquid ink
rollerball style pen in line width and color saturation. Very smooth, though
I've experienced minor skipping when too little pressure is applied - just the
weight of your hand is generally sufficient though. I think it is so broad that
sometimes the ballpoint isn't completely re-coated in ink when spun in the tip
which causes this minor skipping. I would definitely recommend this one to a
fountain or rollerball pen fan who is looking for a decent ballpoint.