Unibene Parker Compatible Gel Ink Ballpoint Refills 12 Pack,0.7mm Medium Point-Blue, Smooth Writing Replaceable German Ink Tactical Pen Refills for Parker Ballpoint/UZI Pen

This is a very good quality refill. It is a perfect fit in my Parker pen. The ink is very bright and flows well with no effort.. I like them so much that I put them in other brands of pen where they fit. Very pleased.

I recently bought a couple of the Bolt Action tactical pens (which are AWESOME!); which are serious pieces of solid brass or titanium, I bought one of each. But the ink cartridges that came inside them were fine points and kind of "scratchy" feeling when you wrote with them. I use these pens every day, so not only can the pens give a bad guy a good poke, I also need them to write well. After trying a couple of other refills (in my humble opinion) these Unibene Gels are the perfect cartridge. Hands down. They come with a wax ball on the tips to make sure that the ink stays fresh AND also a rubber tip OVER the wax! Great presentation. I like a medium to bold point, and the Unibene medium is perfect. The ink just glides on the paper, smooth, and it actually makes my handwriting look better than any plain ballpoint (especially since I write in cursive). These are the refills that I am going to use from now on. Oh, and they're made especially for tactical pens! They're very stout. I had to open the end of the pen just a tad to accommodate these oversize tips. Now my pen is not only a serious spike (and I love to fiddle with the bolt.. calming) but it writes beautifully (glides is a more accurate description!

These have been working fine though are not the highest quality for my Retro Tornado. You will need a spring though. However, when using these in my Kaweco Sport, they have been drying out / not working fairly fast, though I am in cold winter weather so that could potentially be a factor.

These ballpoint pen refills are a great value and so far I am very pleased with the quality and utility. I like the way they write and the fact that the refills are available with gel ink.

Very happy with these aftermarket Parker rollerball refills.They have never leaked and they seem to last as long as the original Parker brand refills.Parker rollerball refills sell, typically, for around $4.00 a piece, and these end up at around 75cents each, with purchase of qty 12. .I will check if this company, Unibene, also produces refills for my Cartier, Lamy and Waterman pens.Thanks for a very good and extremely price competitive product!!

These replacement cartridges leak like crazy. As soon as I removed the little wax ball protector the pen leaked. Literally couldn’t write a word without the ink going everywhere. I tried two more out of the set and they all leaked. Ruined a Chef jacket pocket. Be careful!

it is good until the ink is running out after 4 days; going back to oil-based ink

I needed a refill for a very nice Newhall Street pen I have. They are out of business, but this refill cartridge fits perfectly. I expect many more years of use from this pen now.

Very smooth and writes perfectly. Color is great

Top level productBut don't store for a long time

They do the job and they don't leak, which was a problem in tactical pens that don't write much.

Estou muito satisfeito.

the one i received leaks a lot! ruined my scrub suit! i complained and amazon accepted the return