Ideal for all paper crafts, manga, graphic and fine art, the 5 vibrant colors produce over 25 color tones to create effects such as 3D, smooth transitions, highlighting, shading, gradations and blending, all with one pen. Each pen goes from light for a hint of a tint of color to rich tones, eliminating tonal gaps in your collection. The pen has a Japanese super soft brush nib on one end and bullet nib on the other. Professional quality alcohol-based ink which is permanent on most surfaces. Compatible with all other alcohol-based inks. Non-toxic and low odor. Each pack is complete with detailed instructions that have useful hints, tips and techniques.This 4x4.5x1 inch package contains five double tipped markers. Available in a variety of color palettes, each sold separately. Conforms to ASTMD-4236. Imported.