Unibene Parker Compatible Gel Ink Ballpoint Refills 12 Pack,0.7mm Medium Point- 6 Black&6 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.

Great cartridge with a smooth ink flow, and lots of spares. These will last me a while for sure!

Overall I am pleased. I have a favorite pen for work and have used ballpoint refills for years. Recently we approved the use of gel pens (because our office supplier cannot get ballpoint pens right now lol) so I ordered these straight away. They arrived with 3 of the refills having lost the protective cap and had leaked slightly. I used one of those first and they write smooth and have not leaked any further. The ball leaves a smooth skip free line, and the gel ink is just a joy to write with (terminus me of a smooth fountain pen). These fit my brass pen perfectly and I have not had any other issues. I do worry about the other 2 leakers drying out before I can use them, but we shall see.

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.

Works like a charm.

I had three refills (two blue, one black) that died and became scratchy within a few lines. I have one black one that is currently working fine. I've had duds from the larger brands that were probably old stock (they were brown D1 refills -so not popular). what is unfortunate is the ones that aren't working will give you hope for about three or four letters, then will die off. I'm not sure what the deal is with these non-working ones. These fit in my Retro 51 (early 2000s non-Tornando twish pen) and Rotring R 600.

Don't waste your money! These are junk. I had to try 4 to find one that did not skip.

Very nice. Was surprised about half black and half very dark blue. Probably will not notice the blue. Nice touch. Would buy again. .7 microns so should have sharper point. I t is not noticeable.

Very smooth and writes perfectly. Color is great

Top level product But 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.

not smooth to write with