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

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 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.

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.

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.

My favorite Parker style refill. I’m using it in a Retro 51 Tornado rollerball. The only drawback is that the flash dry doesn’t seem to apply to the Tomoe River paper in my Hobonichi Techo. I’ve managed to smear this ink all over it.

The ink flows steadily and evenly. It writes smoothly. It has become one of my favorite refills.

These refills do exactly what they are supposed to, provide more ink. These have allowed me to buy slightly nicer pens knowing that I have refills available rather than just buying a pen and throwing it away once it is out of ink. They work exactly as they are intended and fit the pen perfect.

This refill constantly starts and stops laying down ink every few letters while writing. Don't listen to people that claim this is a good refill for Zebra pens.