Ideal for artistic impressions, product design, illustrations, fashion designs, sketches, calligraphy or children's drawings, for thin precise lines, expressive brush strokes and for filling large areas, odorless, water paintable, fast drying, clear and brilliant colors based on dyes and gum arabic, color intensity can be reduced by diluting with water or Brush Pen Blender, best results on light drawing and watercolor paper or cardboard. Set of 4 Brush Pen, lemon yellow, magenta, sky blue cyan, black and blender.