Value Pack : A set of 12 pieces brush pen,6 flat brush, 6 sharp brush, 3 sizes (small, medium, large) which is suitable for kids, students, amateur and artists. Easy to Use and Control : The watercolor brush pen simply unscrew the watercolor pens' barrel to add water or ink. Simply to squeeze the barrel to easily control the ink or water flow. (Note: Please make the water less than 2/3 of the pen's volume when filling water into the pen). Premium Quality Nylon Brush: Quality nylon hair brush tips ensures that the water brush pen stay intact and does not spray, spread, or smear while in use. Multi-purpose Watercolor Brush Pen : You can draw the finest line or color large lines, blend colors and create new shades.Great for solid colors or powdered pigment, use with watercolor crayons, water-soluble pencils, water-soluble pigments, inks. Easy to Clean : Just clean it with water after use.