A set of 12 pieces of Water Color Brush Pens,6 flat brushes, 6 brushes, 3 sizes (small, medium, large) suitable for kids, students, amateurs, and artists Water Color Brush Pens simply unscrew the watercolor pen to add water or ink. Simply squeeze the 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.) These Water Color Brush Pens are suitable for all water coloring needs, which are well crafted and well sealed, , and easy to clean quality nylon hair brush tips and plastic pen body that the watercolor brush pen stays intact and does not , spread, or smear while in use These water color pens are perfect for watercolor, aquarelle, powdered pigment, watercolors, crayons, water-soluble pencils, acrylic, gouache, inks, etc Water Color Brush Pens 12-Piece Set - Refillable Multifunctional Brush Pens for Artists, Calligraphy and Watercolor Painting, Professional Art Supplies with Dual Tips Color:As Shown Material:plastic Package Contents: 1set * watercolor pens Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.