This dual-tip brush pen combines two essential functions: its soft, flexible brush tip (1-4mm) responds to your pressure, allowing you to create elegant calligraphy, rich watercolor-like washes, and dynamic shading. Seamlessly switch to the ultra-fine 0.4mm hard tip for adding crisp outlines, delicate details, handwritten notes, or intricate sketches. Featuring advanced water-based pigment ink, create with confidence on coloring books, journals, and printer paper without worrying about smudges or bleed-through.Whether you're unwinding with adult coloring books, designing beautiful bullet journals, practicing modern calligraphy, completing school assignments, or creating professional illustrations, this watercolor pen set is up to the task. It's the trusted choice for students, teachers, office professionals, and artists. Our brush pen set comes in elegant packaging, making it a thoughtful gift for birthdays, holidays, graduation, or any occasion to inspire the creative person in your life.