100pcs Gel Pen Refills 0.5mm for Needle Tip Liquid Pen/Rollerball Ink Pen - Blue

I love these pen refills. They do run out quickly but I love the point and flow of ink.

I ordered some Gel pens with my company name and phone number. The sample ran out of gel ink in just a few weeks. What good is that, people will just throw away the pen. So now I feel I have to pass out some refills with the pens to inspire people to keep using them and not just toss them into the landfills. These refills were an exact size match, and the collar on the stem was in the same place. An excellent fit. Will be ordering more.

Ink runs out faster than I'm used to, but when you get 100 cartridges, it's not too inconvenient.

It’s been literally years since I’ve had these inks and tried using it now but it hasn’t fit one pen. It writes nice but not worth getting

I love the needle point. The ink could last longer but the quantity helps

While you get a lot of refills for the price, there were at least ten refills that busted in the package when it arrived. When a refill works, the is a richer blue color and releases onto a page well. Some of the refills worked, but then started blobbing at the tips. I was lucky to find refills of this size for a pen I very much wanted to still use.

The refills wrote correctly. I haven't experienced any burst ink yet, but I've only just received it and only used it for a day. The ink refills come with a cap to protect the writing tip, but otherwise came in a bulk package style bag. Some ink smudges on the outside of the ink tubes point to previous ink spills or burst refills, but I'd like to point out that none of the ones that were shipped to me burst.

I'm not keeping stats but generally, about 1/3 of the batch stop working even though still 50% of ink remains. Not good odds.