These are double tip brush markers set.

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 tip at one end allows you to use a technique similar to painting. The other tip can be used to draw thin, precise lines to create perfect drawings. The water-based inks can be mixed together.

These brush markers set can also be used like water-colours. You just need to apply the colours to a shiny surface such as a plastic sheet or an old CD and mix them with water and paint-brush to create some beautiful effects.