I bought 2 of these. The one that works writes really nicely, fine thin line,
yet smooth. The other one keeps having the ink flowing out unevenly despite
being brand new. So for the one that works: 5 star, for the one that does not: 1
star. I also found that this problem of uneven ink flow happen pretty often with
ultra fine ballpoint pen, so still looking for a good stable ballpoint pen
because I really like the fine line that it produces.