There are no limits with the ABT Double Brush Marker. It's a marker with two tips; the fine tip is ideal for lines and drawings, the second is highly flexible like a brush, combining mobility and durability. The ink is odorless, non-toxic, drip-free, and acid-free thanks to its water-based composition. The colors are not lightfast. They work perfectly like watercolors and blend easily as such. Due to their versatile characteristics, these markers are also used by comic book artists, graphic artists, and others.