6 Pieces Refillable Watercolor Brush Pens Water Paint Brush for Painting Markers MULTI-APPLICATION: With 3 sizes of point and flat brush pens, you can draw fine lines, color large areas, blend shades, and create new colors . SAFE FOR KIDS: Made with high-quality plastic bodies and sheer nylon hair bristles, these watercolor brush pens are non-toxic and safe for children. EASY TO USE: Simply unscrew (the opposite way from usual) fill 2 thirds with tap water and you're ready to go. Simply squeeze barrel to easily control the ink or water flow. Great for solid colors or powdered pigment, use with watercolor crayons, water-soluble pencils, water-soluble pigments, inks. EASY TO CLEAN: these water brush pens are suitable for all water coloring needs which are well crafted durable easy to clean ， just clean it with water after use.