Sketch Markers are excellent for all forms of illustration, comics,
design, scrapbooking, fine art and more. The Sketch line has nibs at
either end: medium-broad and fine.
Copic Markers have an alcohol-based ink that is permanent, non-toxic,
low odor and acid-free. (And since they are alcohol based, they can be
layered over other printed papers to tint (or bump up the color) still
allowing the original designs to show through.)
Sketch Markers are refillable, have replaceable nibs and are guaranteed for color consistency (and have a 3-year shelf life).
Note: a good pen to have around to fix little scratches or rubbed-off paint on black items.