This package includes 3 point tip brush pens and 3 flat tip brush pens, suitable for art students, amateur and professional artists. Quality nylon hair brush tips ensure that the watercolor brush pen stays intact and does not spray, spread, or smear while in use. Simply screw off the barrel to add water or ink and then screw. Control the ink or water flow with just a squeeze of the barrel. 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. Mr. Pen water brush pen can be filled with water to blend, or you can add your favorite ink to make your own portable brush. Just clean it with water after use.