The solvent-based ink in Chartpak Ad Markers is permanent and waterproof. These art markers are ideal for everything from articulate details to broadly expressive illustrations. Each Chartpak Ad Marker features a single nib which can deliver three distinct line weights. Create fine, medium or bold strokes with just a flip of the wrist.
Warm and Cool Grays, Set of 25 - This art marker set includes one each of Black, Extra Black, Super Black, Basic Gray 1, Basic Gray 2, Basic Gray 4, Basic Gray 5, Cool Gray 1, Cool Gray 2, Cool Gray 3, Cool Gray 4, Cool Gray 5, Cool Gray 6, Cool Gray 7, Cool Gray 8, Cool Gray 9, Cool Gray 10, Warm Gray 1, Warm Gray 2, Warm Gray 3, Warm Gray 4, Warm Gray 5, Warm Gray 6, Warm Gray 7 and Warm Gray 8.