Widen your artistic horizons with the dual-tip marker design! Choose the brush tip for sweeping, calligraphic strokes or quickly color in large areas with the wide chisel tip. What's more, now Ohuhu replacement brush tips is available, so you can easily replace the worn-out tips to ensure consistent and precise lines whenever you create. The only limit is your imagination. High-quality ink blends seamlessly to achieve beautiful coloring effects, even for beginners. Plus, your artwork will never fade or smudge with time. This set includes: YGY13 Oyster Grey, YGY17 Platinum Grey, YGY18 Stone Grey, CG02 Light Grey, CG24 Grey, CG28 Web Grey, WG37 Dark Charcoal, CG01 Cloud Grey, CG25 Deep Grey, BGY13 Seagull Grey, BGY15 Blue Steel Grey, and BGY35 Iron Grey.Details:Includes assorted gray tonesDouble-tip (chisel and brush)12 markersEasy blending, no smudgingAlcohol-based ink, dries instantlyFind colors fast with color-coded capsConforms to ASTM D-4236