These flexible brush markers contain a dye-based transparent ink that blends easily to create a multitude of hues. Fine, medium, or bold strokes are easy to achieve, simply by varying the pressure on the brush nib. They're great for students, graphic artists, designers, and illustrators. - Sakura Koi Coloring Brush Pens - Assorted Colors, Set of 48Koi Coloring Brush, 48/CLR SET - This set includes Yellow, Deep Yellow, Orange, Coral Red, Pale Orange, Woody Brown, Naples Yellow, Dark Brown, Brown, Raw Sienna, Vermilion, Red, Salmon Pink, Pink, Rose Red, Magenta Pink, Burgundy, Fuchsia, Lilac, Bordeaux, Purple, Iris, Light Purple, Cerulean Blue, Sky Blue, Steel Blue, Emerald Green, Peacock Green, Yellow Green, Blue Green Light, Ice Green, Green, Sap Green, Viridian, Fresh Green, Blue, Aqua Blue, Light Sky Blue, Lavender, Prussian Blue, Raw Umber, Black, Cool Gray, Dark Warm Gray, Warm Gray, Light Warm Gray, Dark Cool Gray, and Light Cool Gray.