It's a pen with a double brush tip suitable for artists, designers, and amateur painters of all ages. The two tips are very durable and will produce the same high quality results for a long time. The brush tip at one end allows you to use a technique similar to painting. The other bullet tip can be used to draw thin, precise lines to create perfect drawings. The water-based inks can be mixed together. They can also be used like watercolors - just apply the colours to a shiny surface such as a plastic sheet and mix them with water and paint-brush to create some beautiful effects.