The Blackliner Fine Line Pens are ideal for Drawing and Sketching. The high-quality black pigment ink is waterproof, non-fading, and conforms to ASTM D-4236. The set of 4 fine point sizes includes 0.05, 0.10, 0.20, and 0.30 mm. The set of 4 broad point sizes includes 0.40, 0.50, 0.60, and 0.80 mm.
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Austin from Houston
Great pens , but I've had them bleed w/ water and India ink. Maybe I didn't let it dry enough. Also, if you don't let the ink try for at least 30 minutes, it's prone to smearing if you try to erase your pencil marks
Sandi from California
I bought these to do illustrations for a book. They draw smoothly and dark, but they are not waterproof. I let them dry 2 days and when I went to watercolor , the drawing smeared and bled badly
