Mitsubishi Pencil Uni-Ball One UMNS38.7 Gel Ballpoint Pens, 0.01 inches (0.38 mm), Green Black, 10-Pen Box

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

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.

Some of my favourite pens have refills! I love my Uni-Ball pens. The fine tip and smooth writing means I always have one with me. Being refillable is a big plus for me and it fits in both the full size pen and the shorter pen. Refills cuts down on plastic waste so I don't always have to buy new pens.

The ink flow smoothly without cutting the paper.

Good pens from uniball. But the .3 might be too thin for my writing style in the field, one roller already stopped working. Otherwise the pens wrote smoothly while they still worked. Love the different colors

Good quality ink

I love how effortlessly these pens write. They don't smudge and the green is so dark that to an unsuspecting eye just looks black. Can be used for checks or anything else you want. Super comfortable in the hand as well. I keep one in each car and all over the house because I won't use any other pen if I don't have too. I will buy again!

Worked just as intended

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