Pigma Professional Brush pens offer the ultimate in versatility allowing you to produce super fine hairlines to big, bold strokes. The deep black, archival quality Pigma ink is chemically stable, waterproof & fade-resistant and produces no smears, feathers or bleed-through on most papers. Their durable brush nibs respond to changes in pressure or direction with smooth, accurate & consistent ink flow. These brush nibs were specially developed to provide fantastic bounce and memory over long periods of use. Note: the material of each brush nib varies among pen widths (see below for details). Artists who prefer brushes will appreciate the flexibility of a portable brush with continual ink flow, avoiding the need to dip the brush & carry messy inks. Manga and comic artists, illustrators, & lettering art professionals will enjoy the expressiveness of thick to thin strokes with ease and fluidity. Set contains 3 black brush pens in Fine, Medium & Bold Brush Nibs.