NO SPREAD OR SMEAR: High quality nylon hair brush tip that stay intact and does not spray, spread, or smear while in use

EASY TO USE: Simply to squeeze barrel to easily control the ink or water flow. To use, blend with water, add ink to barrel and enjoy! (Note: Please make the water less than 2/3 of the pen's volume when filling water into the pen)

EASY TO CLEAN: Just clean it with water after each usage;

MULTI-PURPOSE: These watercolor brush Pen Set can be used for solid colors or powdered pigment, use with aquash watercolor crayons, markers, and pencils to spread and smooth colors