Achieve professional quality results with these Molotow Sketcher Twin Graphic Marker Sets. Featuring rich, vivid color and dual tips, these markers are great for adding color to product design sketches, comic art, and other illustrations. The non-toxic, waterbased AquaPro ink resists fading from UV exposure, and it dries quickly on paper to minimize smudging and bleeding. - Molotow Sketcher Twin Graphic Markers - Grey Kit 1, Set of 12Molotow Sktchr Mrkr, 12CT GREY KIT 1 - Includes one each of Neutral Grey 1 (540), Neutral Grey 2 (545), Neutral Grey 3 (550), Neutral Grey 4 (555), Neutral Grey 5 (560), Neutral Grey 6 (565), Warm Grey 1 (570), Warm Grey 2 (575), Warm Grey 3 (580), Warm Grey 4 (585), Warm Grey 5 (590), and Warm Grey 6 (595).