Cobee9 Colors Gel Pen Set, 0.8mm Fine Point Rollerball Pens Line Drawing Gel Ink Pens Archival Ink Fine Tip Sketching Pen for Black Paper Drawing Illustration Card Making

I need to confess that I didn’t expect much but I was very pleasantly surprised. They look great on black and the quality is good.

Not opaque. Difficult to make the colours work

I've been usually metalic marker pens on my black sketch book but the nib was too thick so the writing was illegible unless I wrote with large letter. That just takes up too much space though. These pens are fantastic as they're ball point so I can write normally and it reads normally. Attached a picture for reference of how the colours show on black paper.

Didn't show the bright vivid colours as they did on the pic rather dull to be honest.

Good