Marabu Graphix Fineliners are designed for both impulsive or "loose" sketching and technical, structured visualizations. Ideal for illustrators, fine artists, journalers and students, these fineliners feature high-quality, lightfast, water-based pigment ink. This Skyline set includes ruby red, ultramarine blue, dark green and black.Details:Includes assorted color0.5 mm nib size4 pensHigh quality, water-based pigment inkNo bleed inkLow-odor