[Set Includes] You will get 12 pcs blue watercolor brush pens with pen caps and 6 different sizes of brush heads. The quantity is enough for your daily study or use. [ Material] The refillable watercolor pens are made of quality nylon tips and plastic pen bodies. It is soft and elastic, with smooth and delicate water flow. It will not , spread, or smear when used. [Anti-Leak Design] This water brush pen for watercolor is designed with a valve to avoid leakage when painting. It is self-lubricating, leak-proof, waterproof, and , making it very convenient to use or out. [Easy to Use] For watercolor paint pens, you only need to unscrew the pen barrel of the watercolor pen to add ink or water (be careful not to exceed 2/3 of the pen barrel's volume). Gently press the pen barrel to control the flow of water or ink. Clean it with water after use. [Wide Application] This soft watercolor brush pen is suitable for watercolors, powdered paints, acrylics, gouache, ink, watercolor crayons, water-soluble pencils, and water-soluble pigments. You can use a pointed water brush for thin outlines and a flat water brush for thicker lines or fill and blend colors. Colour:Blue Material:plastic Size:15x1.3x1.8 cm Package Contents: 12 * Water Brush 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.