Thanks all for posting reviews - entire site full of helpful reviews.
After testing out all I ordered, I found 95% of all the reviews (on products I
ordered) to be very correct.
This particular pen, takes my breath away - OMG !!!
I just wouldn't recommend it for everyday use as other reviewer reported.
I can use it every other day!
Truly the sharpest, cleanest ink line possible. Many uses.
AND I tested it with several types of paper, all showed very little change with
water applied. Testing water plus abrasion - the paper fibers rolled off before
the ink budged. So I'd certainly say it is permanent on paper.
I just noticed! You can see the box in the picture clear enough to see it says
10pc - no wonder they didn't put it in the description.
Can't wait to try these colors/brand(s) will post update when done testing.