uni-ball Uni Pin Black Fineliner Art Pens. Premium Assorted Nib Sizes + One Gel Pen For Precise Sketch, Handwriting & Technical Drawing. Permanent Fade and Waterproof Super Ink. Set of 14 Pens

Better than I expected. Ink nice and deep black colour. and the ink doesn’t bleed with application of watercolour over the top of the ink drawing. The largest size pen in the pack ie 1.0 was a little scratchy on heavy weight mixed media Daler Rowney paper surface to start with and it,s probably not ideally suited for that; but with careful use soon began producing a nice smooth line.I,ve used Rotring isograph pens extensively, and these uni fine liner pens are every bit as professional although different and are definitely more versatile in my opinion. One pen lasted for one A2 size drawing. It becomes obvious as you are drawing when they are beginning to run outGreat product.Highly recommended

Los quería para usar con acuarela y no defraudan. Es q no se menea la tinta ni un ápice por mucho q la mojes.