Mitsubishi Pencil Uni-Ball One UMNS38.2 Gel Ballpoint Pens, 0.01 inches (0.38 mm), Yellow, 10 Pieces

Best refills around. Amazing price point for the amount you get. Doesn't smear. Perfect for TRP or Sanzen paper. Last a good while. Easy to switch out in the pens. No scratching. I will always buy these, especially in 0.38. writes so smooth! I could literally fill an entire store with the amount of pens I own and these are some of my absolute FAVORITE.

Love these refilled they are an excellent value for your dollar and fit perfectly in my uniball ball point pen. I love that they are .38 mm. I only wish they held more ink. I use them for EVERYTHING and do a lot of Bible study, sermon notes, and other writings. The ink flow is amazing the the quality and durability are great. I think of 2-3 purchases I had issues with one of them. All others have worked fine. These are my go to pen refills. I love the design and know that they fit my pens. If you love writing with a great pen and like very fine tips these are the best

Very black ink!! Quality pen refills. They don’t skip and last quite awhile. One cartridge will last about 6 months of daily use, and I write a lot. Feel smooth and my favorite ink pens! Dries fast and doesn’t smudge.

One of the best pens and inks I have ever used. Doesn't smudge and writing comes out looking rich and deep. It is not very thick so the writing is dainty and neat. Small pens so small ink but makes it easy to use for smaller hands.

I needed a thin red pen for notes, and this one writes very smoothly. The ink is bright enough to stand out without being distracting when reading.

The box these refills come in came damaged and flattened, but that is probably the delivery guy's fault. The refills are fine and they do the job. I put them in my uniball one p and it's great. The ink does skip a little sometimes but it's not that bad and kinda to be expected with such a fine tip. Only con is they run out pretty fast so the refills are definitely something you should have on hand. I think they're worth the money and they fit great in the pen.

The work with both the small and tall pens from uniball. Great quality pens and these refills make it so that i can keep using them without have to throw them and buy.

Darkest ink around. Thin and smooth. Occasionally one will start skipping and can sometimes be fixed, but it’s not often enough to bother me.

Very great value for money compared to other places that sell these refills. My only complaint with Uniball One Gel refill is that I wish there was more ink in each refill so that the pen can last longer. As someone who writes a lot for school, I find myself going through each refill extremely fast. Fortunately, the writing experience makes up for it.

replacement ink for uniball one P works great and exactly as described

The listing is for 10 pieces but I received 1 only. For the price, this is a rip off.

I am a huge uniball fan, always have been. When looking for a pen, I wanted something robust that would hold in the button sleeve of my shirt. This does this all day long. I sell cars and walk the lot and never lose my pen. I'm sad I can no longer find the 0.5 mm, but these still write nice. Other than my carbon fiber signing pen, this is the only pen you will ever need, and that I ever use.

Value for money. I ve always loved this pen, got these for much less than at the bookstore