Pilot FriXion Ball Slim 0.38mm Green Ink Refill (LFBTRF12UF-G), 3 Packs/total 3 Refills (Japan Import) [Komainu-Dou Original Package]

These work best in the frixion ball 4 pens and I absolutely love it. It is erasable without destroying the paper, the color is as expected, it fits perfectly in the ball 4, and writes very smoothly. These are a bit more expensive than I would like, but I keep buying it so it is worth it.

These worked great, but I learned that I prefer a .5mm ... I can read it much better

I use lots of colors in my journal, and the fact they are erasable is such a big plus!

Refills don’t last long but understand they are small

Great Quality, excellent shipping

I put these in to my pens and they worked the first time I used them. After that, no ink comes out. It’s like it dried up. These are my favorite pens so this is super disappointing.

Received replacements on time but arrived with ink spilled inside the package, will return them.

Twice I purchased this. It was supposed to be 0.38mm but I kept getting 0.5mm instead.