Watercolor Brushes Refillable Watercolor Brush Pens Set for Painting Markers Artists Calligraphy Features: Easy e and Control : You need simply unscrew the watercolor pens' barrel to add water or ink.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). Multi-purpose : 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. Quality Nylon Brush: Quality nylon hair brush tips ensures that the watercolor brush pen stay intact and does not spray, spread, or smear while in use. Easy to Clean : Just clean it with water after using. Package: The watercolor brush pen set include flat brushes and sharp brushes, 3 sizes (small, medium, large) suitable for kids, students, amateur and artists. Specifications： Material: Nylon Package Weight: 30g / 1.1oz(3 pens)                             70g / 2.5oz(6 pens) Package Size: 16 * 4 * 1.3cm / 6.3 * 1.6 * 0.5in(3 pens)                                     19.5 * 8.5 * 1.3cm / 7.7 * 3.3 * 0.5in(6 pens) Packing List： 1 * Pack of Brushes