OHTO Flash Dry Gel Ballpoint Pen Refill 0.5mm [Black] PG-105NP (Japan Import)

This is my favorite refill for my rOtring 600. It fits perfectly. I really like the needle tip, the ink is nice and black, it writes smooth and doesn't skip. All in all it is a great refill ime.

This refill is extraordinary! It dries faster than the ball point refill that I had in my pen before this, and it writes smooth as butter. I especially like the needle tip as you can really see what you’re writing and be precise. I also like that it’s plastic and see-through so that you can see how much ink you have left and it doesn’t add any unecessary weight to my already hefty pen. Great refill!

This is now my go-to refill for my Rotring 600. Writes perfectly smooth and never gets clogged by lint/dust like many rollerballs do. Dries exceptionally fast and does not bleed or smear. Lasts a long time. And is quite reasonably priced, even on Amazon, which is never the cheapest place to buy pen refills. I love these refills and really couldn't ask for anything more. They are my favorite thing to write with other than the Schmidt p8126, which only fits in a handful of pens.

The ink that came with my Parker Jotter Ballpoint pen ran out, and was not writing as dark as I would have liked it. This was a great, relatively inexpensive replacement. This with the Jotter, is my favorite combo for pen/ink and its what I use every day.

It is a pretty good option for someone who wants a needle tip gel pen. Very dark line that writes smoothly. Only complaint is that it can smudge more than I like.

Very nice refill. I'm a fan of a 0.5 tip pen. The ink flows nicely and is a dark black. Actually bought it to fit into a Zebra F 701. With just a little tweaking, it works. Don't have a pen that fits a Parker refill, so can't speak on that. But this refill is specifically for Parker G2 refillable pens. Once I have one, I'm getting another one of these refills for it.

After trying this a second time, I can confirm it is not worth the money. The pen skips badly no matter how I try to write. Dry time is quick, but that is if I can manage to write without going back over and making a mess of the paper. I’ve tried on heavier weight paper and it still fails to write reliably.

Fits the Zebra F701 and writes smoothly. A rich, dark (yet very fine) line which dries fairly quickly. I'm very pleased and will be purchasing more of these refills when needed.