The Aquastroke Brush Pen is an innovative way to paint with water-soluble mediums either on-the-go or in a studio! Aquastroke allows you to add water without carrying a separate water supply. Aquastroke Brush Pens are made with high quality, white nylon brush tips. They are incredibly accurate and create strokes with ease. These brush pens can also double as a brush marker! Simply add ink to the water basin and begin painting. Great for use with watercolor pencils and crayons, half pans and watercolors tubes.