These pens are a wonderful tool for coloring, fine art, illustrations, doodling, journaling or hand lettering. They feature a dual-tip design: one brush tip for painterly lines and one fine tip for details. The brush tip is flexible and smooth, transitioning seamlessly from thin, medium to thick lines with the slightest pressure. The single ink reservoir ensures that colors match up. Blend colors on a palette and apply with the marker tips for and endless palette of color; tips self-clean after blending. This set includes 990 light sand, 026 yellow gold, 947 burnt sienna, 757 port red, 623 purple sage, 679 dark plum, 076 green ochre, 098 avocado, N52 cool gray 8 and 528 navy blue.