Chartpak AD100 tri-nib artist marker set of 100 colors. Chartpak brings you its permanent-color AD Marker with 3 distinct line weights in one nib. A single nib with three distinct line weights. These waterproof, permanent, solvent-based art markers deliver brilliant, sparkling color in fine point, medium weight, or broad strokes, with just a twist of the wrist. AP non-toxic, solvent-based markers do not streak or feather and are ideal for artistic use on traditional and non-traditional surfaces such as paper, acrylics, ceramics, and more! Assorted set of 100 colored artist markers with handy storage case. Chartpak colored markers are quality-made in the USA. FREE GROUND SHIPPING TO 48 LOWER US STATES.