It is a good pen. I used the blue ink most of the time. I wonder if Zebra sell the core ink separately. It is a waste once the ink is finished and I need to throw away the body of the pen. There are a lot of good at this pen.

These pens are so useful and they write so smooth. I have had my pens for almost a year and I use the, 24/7 and the still have not ran out. These pens are by far the most amazing pens I have used in my whole entire life.

I bought one as an experiment and was suprised by the superior ergonomy compared to any other ballpoint pen. However, don't like buying a new body every time it runs out - I would strongly recommend making these refillable.

Just bought these hoping they will work great for me. So far I am not super impressed. They leak a little and leave ink blobs at the beginnings of some words. My biggest question that I can't find an answer to: are these pens acid free?

I love these mechanical pencils! They work so well...they're perfect! I'd recommend them to everyone and I won't buy another kind of pencil but these.

This is a good pen. It replaced a Zebra pen Model that I loved (the Zmulsion). The writing touch is lighter than my favorite but the pen is definitely good and the ordering price and delivery process was excellent.

pens are running with smooth ink, not one of them are broken out of the package, and over all feel of the pens is comfortable

My pack of pens was in a completely opened and damaged. Why would you send out such a damaged item to your customers!?

Needed ink pens at the last minute for a conference. It is a great writing pen, fantastic price for a 24-count pack.

I just bought a 24 pack of multi-colored pens and not even a paragraph later the pens write intermittently.