UPINS 18 Piece Water Color Brush Pen Set?Watercolor Paint Pens for Painting Markers

Inside Package: 18 pcs water color brushes,9 flat brush, 9 sharp brush, 3 sizes (small x3, medium x3, large x3 ) with a practical carry bag perfect for saving and carrying. Size: Flat brush Small - hair width : 0.6cm, hair length : 1cm Medium - hair width : 0.8cm, hair length : 1.6cm Large - hair width : 1.5cm, hair length : 1.7cm Sharp brush Small - hair width : 0.3cm, hair length : 1.2cm Medium - hair width : 0.5cm, hair length : 1.5cm Large - hair width : 0.6cm, hair length : 1.9cm How to use: Watercolor Brush Pens simply unscrew the watercolor pens' barrel to add water or ink. Simply to 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). Easy to store: Keep your watercolor pen set always organized and accessible with a practical carry bag. Perfect for using at school or travel Change your life: No mess watercolor brush pen gives you peace of mind while painting. No more dealing with messy water bowls and spilled water!