I bought these refills in blue, black, and red for my uniball jetstream
multi-pen. None of the colors perform as expected. I use this pen daily at work,
and have found that after only 25-50% of the cartridges have been used, the ink
loses its color intensity and begins skipping. I am replacing ink much more
frequently than should be necessary. I will continue to use until my stash of
refills is exhausted (since the money has already been spent), then will trash
the pen. Do not recommend, will not repurchase.
I'm having the same problem as the previous reviewer!! It will work fine until
about 30% through, then the ink starts skipping and the ink barely comes out.
It's so frustrating because as a law student, I use this pen every day and I'm
having to throw away the refill when there's still 70% left. I ordered a ton of
refills and so far, almost every single one has been doing this. Does anyone
have any solutions? This is a complete waste of money...
Otherwise, when the ink is working properly, this pen is great.