JANYUN 100Pcs Ink Pen Refills Replaceable, 0.7mm Black Ballpoint Pen Refill

I bought these for work because I noticed all these desk counter pens they were using for all the computers had many that were dried out and had no replacements. The only way you can replace the ink, which came out easily, for this specific pen was to replace the entire pen which I found absolutely absurd, expensive, and wasteful. So I bought these as refills for the universal counter pen unv15625. I included a picture of how these counter pens come apart and one of their old dried out ink refills with another pen that has one of these new refills inside and two new refills next to it; one that is cut to size for this pen and one that isn't. I do have to cut a small amount off but it otherwise fits perfectly and it has a nice ink flow. I've even been using them to replace ink in other pens that had seemingly different ink cartridges but these still work.

Box full of refills. Easy to use and good quality.

I have a bunch of Pentel RSVP pens that I love and want to keep using. I also hate buying new pens just to create more garbage. I figured the best solution was buying refills. After searching all over Amazon this item had the best price, most refills and best reviews. As others have said, the tubes and tips are skinnier than usual pens but they still fit just fine. The issue is the tubes are very short. I found a clicker pen where it fits well but the Pentel pens have space left over at the end. To rectify I filled in the left over space. I have been writing with the pens for a few days now. The blue ink does not leak and it writes well. BUT the issue is that the ink sometimes doesn't come to the tip. I have to press down really hard to get it going again. Ultimately it is not a huge inconvenience considering the price and number of refills.

Where have these been all my life ?? I have thrown away good pens and all I needed was a refill ? Ugh ! If it’s too long for your pen cut it !

Yes, it works in most pens (may need to cut off the end to the correct length.) The quality is not great. Not a very smooth pen. Does the job, not my favorite. I have hundreds to go through, but next time I'll try a different type.

I can't possibly speak as to longevity as I just began use last week. The writing is smooth. I have not encountered any skips. The listing describes as blue black refills. That does not refer to the ink color (as I presumed) but rather a mix of blue and black refills. I have used as replacements for about 10 ink pens so far. I have not had to trim any refills to make fit. However, even though the length is the same as the original, there is a slight hitch with Bic Click Top pens. You have to press top of pen hard to get ink tip to come out with Bics, and have to press hard to retract the pen tip. I think it has something to do with where the spring lines up on the cartridge. For my other non Bic Click Top pens there are no issues.

Scratchy and skip a lot. Maybe old? Anyway, only fit for the more basic utility, like temporary notes. I'd never write a letter with one. Avoid....

Purchased these refills for a small pen I keep in my handbag. It was longer than the pen, so I just cut the end to size needed. Works fine.

Ich schreibe unglaublich viel, die Minen sind angenehm und schreiben gut, passen in meine Lieblingskulis

As described. Quick delivery

Perfect quality and works with most type of pens

Like these refills, although they are smaller than most. Not as much ink in them. However good for the price.

Sensationell schnell und gut!