UnibeneParker Compatible Rollerball Refill 6 Pack, 0.7mm Medium Point - Black, Smooth Writing Replaceable German Gel Ink Pen Refills for IM Sonnet Urban Pens

While I have always been a Parker Fan with several Rollerballs and a Fountain pen, I was disappointed with the cartridge in my new Parker Jotter. It was much finer that I would have expected from a medium tip. Not to mention, under certain conditions it was "skipping".I am very happy with the Unibene replacement. It is as full and consistent as I would have expected. I also like their blue ink color. Will need to see how longevity plays out. However the Unibene replacement cartridges I have used in some tactical pens have been a pleasant surprise, thus the new loyalty to this brand.I believe its worth a try for this modest investment.

Good Quality

Had hoped these would be acceptable in a Parker rollerball pen. Wrong. The mechanical fit is OK. The writing is terrible - not smooth, skips (as if insufficient ink), and refuses to write on many types of treated paper surfaces that an ordinary pen writes on easily. Tried more than one, some variation, but not success. Used one for an extended amount of scribbling, hoping that it would get better - no. Definitely not "Parker quality".

These seem like fine replacements for the roller ball pen cartridges. I'm not noticing skipping or gooping like some folks were. So far, so good for me..

I like that its writing still smooth, no skipping at all. For a generic refill, it is great for the quality and value for the $. The ink comes out a little faster and thicker than my Parker refill, so that it can blob easier and the lines are just not as fine, even though they both say they are "fine" and .5 mm. Makes a huge difference in letter-writing, but it should be fine otherwise. I had purchased it for the fine old art of letter writing, so I may need to go ahead and also purchase some more Parker refills. I do love the rollerball better than the gel or ballpoint versions of the Parker pen for its smooth flow.

If you own and use ANY Parker rollerball pen (from the Vector to the Duofold Centennial), then your pens NEED this refill! They are MUCH better than the Parker or Monteverde refills! They are smooth, lay down a beautiful skip-free line, and they LAST! What a value! Parker could learn a thing or two by studying this refill! The ink dries fairly quickly which leaves your page smudge free! I got the black refills, and the lines are nice and dark! I use them in ALL of my Parker rollerball pens. The pen shown in the pics is the Parker Premier rollerball in black with gold trims. These refills are especially nice in this pen, and make it an absolute pleasure to write with! If you're looking for an upgrade to the "skippy" Parker branded refills, look no further! Unibene has you covered! Highly recommend!

These rollerball refills, which work with Parker rollerball pens, are significantly better than the Parker refills and clost a lot less. I have had Parker refills stop working out of their packaging. Very occasionally, I got one that worked for weeks. I've tried one of these refills, and it is still going, although faltering after nine days use. So it is much better, but you'd probably get a lot more wear out of a ballpoint refill, even a Parker gel refill. So better, but maybe not good enough to justify using a Parker rollerball pen.

The product offered superior quality compared to the brand name product.at a fraction of the cost. Will definitely reorder when these are gone.