Uni-BallJetstream Fine Point Roller Ball Pens Refills for Standard Pen Type -0.7mm-blue Ink-value Set of 5

Had a difficult time finding 0.07 refills for my favorite Jetstream pens. This is exactly the right fit and I tested all the refill cartridges. All write smoothly, no blobbing, and I'm so glad to have found these on Amazon. My local stationery store didn't have them on their shelf, and they were much costlier to order there.

I’m picky about my ink, and these Uni-ball Jetstream 0.7mm refills hit the sweet spot—smooth writing, no smudging, no skipping. They make even quick notes feel effortless.I’ve tried a lot of pens, but I always come back to these. The ink dries fast enough that I don’t end up with smudges (even when I’m scribbling something down in a hurry). Plus, they last a good while, so I’m not constantly swapping them out.If you already use Jetstream pens, these are a no-brainer. If you don’t—maybe it’s time to start. I don’t see myself switching anytime soon.

Perfect fit for my Jet Stream Pens. Long lasting, does not get ink blobs on paper...always writes clearing and smoothly. Highly recommend if Jet Stream is your favorite Pen.

Some Jetstreams last to the last drop, others die halfway through. I've found a way to fix that failure, but I've not tried it with Jetstream yet. Get a hypodermic needle, the smaller size. Dull the needle a little bit with a file or sharpening stone (you may find the 5 pack in Amazon), so you dont stick yourself. Fill the cavity with air and push the needle into the end of the cartridge, holding over a piece of scratch paper in case ink runs out, like it will with a rollerball. Push down on the plunger with your thumb to build up some pressure in the cartridge, and rub the tip over some cloth or paper to try to clear the ball point of any dried ink, paper pulp or debris that may have clogged the tip. Alcohol soaks wont do it. You'd be surprised how an old cartridge might be brought back, but not always. You can use bigger needles or take off the needle for rollerballs sometimes. Now they have these new rubber grip pens I'm going to enjoy UniBall again. Just for kicks, you can put a Signo's silver tip on some of these ballpoints. Do try to keep all springs for later use, if you like to switch cartridges around in different pens. You can twist out a big paper clip to save springs on, and bend the tips of the clip together to keep the springs on it.

It's such a waste when your favorite pens have empty cartridges and it is impossible to find the right replacements. These replacements were made for the pens I love and less money than others out there on the market AND they work great!

This is the smoothest ink on he market. You won't find a better pen refil than these. They write better than anything else I've tried. I usually put these inside a Sarasa Grand pen to make the perfect pen. I am able to write on thick porous paper and also very thin bible paper with these without any skipping l and the ink dries super fast. No smearing even with highlighters.

This is the best pen ever made for under $100. I was so excited to find that the refills were available, as the pen itself is somewhat expensive but I have become addicted to it. Smooth writing and never skips. I personally like the 0.7mm tip, but the 1.0mm is great too.

The product (at least the one sold by ZipanguCom) is defective. It writes fine for the first day of light use, but by the second day it is almost completely dried out. I ignored some of the earlier reviews that said the same thing (assuming that these reviewers' experiences were abnormal), but this was a mistake. I would not recommend buying these refills.