Uni-ball Eye Rolling Ball Pen, Extra Fine Point 0.5mm, Black Ink, 3 pens per Pack (Japan import) [Komainu-Dou Original Package]

I bought these for urban sketching. I do a pencil sketch, then I finalize my line art with these markers, and then I watercolor over them. They have excellent use for this purpose and work fantastically. The ink is very solid and opaque, the lines are reliable, and these are awesome pens. They don't feather they don't bleed they don't go through paper unless it's extremely thin, and I'm very happy with this purchase. I would highly recommend any of the super ink pens by uni. I have some uni ball pens that I bought at the end of the 90s and in the early 2000s, and they still write like champs if I haven't used them for a while. There's lots of ink in them and they work a long time.I have to say I've never had a product from this company that I was disappointed in. They're white gel markers are the best on the market. If you like gelly rolls, you were going to love their white gel pens. They're even more noticeably opaque and the ink goes on excellently..

Bought these for ink sketches prior to water coloring and they work great!

Been using these for 40 years (not the same pen, though). Why change now?

The ink flow is good and they were still good when they arrived.

The uniball eye pen is perfect for urban sketching. I like the thin line and the easy flow on paper. The ink is waterproof, and doesn't run or smear when I paint over the sketch with watercolor.

These are my favorite rolling ball pens to sketch with when I'm not using fountain pens. I need to make a correction from the product's description. they write that it's "water based ink". When, what (I think) they meant to say, is that it is 'waterproof ink". The ink is fast drying and once dry, it will not bleed or smudge. This is important to us urban sketchers who do watercolor on top of our ink sketches. If this is important to you also, then this is the pen for you. Consistant line, no blobbing, quick drying and waterproof. This is a great pen that won't break the bank.

The pen write so smooth. The ink doesn't bleed or fade. I definitely will buy more!

The pens work nicely, but the ink is--sadly-- NOT WATERPROOF.

Uncomfortable to hold unlike other versions of the same pen

Super