Just received my pack of round nibs and already switched one with the Super
brush nib on a black 100 Sketch marker. I would have liked to have a Super brush
nib on one end and the medium round on the other, but the medium broad brush nib
end will not accept either one. Freshly installed, the medium round marker nib
performs nicely affording greater control and uniformity of line than the Super
brush nib. Suitable for cartooning and drawing caricatures like a good
alternative to the harder-to-find Dixon Markette marker pen.