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.
Cool Grey Set of 12 - This art marker set includes one each of Black, Colorless Blender, 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 and Cool Gray 10.