0.4 MM TIP. With an ultra-fine 0.4 mm tip, these pens allow for intricate detailing and clean, fine lines, catering to artists, illustrators, and users who require precision. Effortless control for accurate writing or drawing. METAL NIB. Our fiber pen features a metal nib for more durability to ensure the pen can withstand prolonged use without compromising performance. Enjoy a longer lasting writing instrument. WATER-BASED INK. The ink is water-based, providing a writing experience that is both smooth and quick-drying. This formulation prevents bleed-through and smudging on most paper surfaces, ensuring efficient and error-free writing. SMOOTH WRITING. Boasting a consistently smooth ink flow, all users can achieve fluid and controlled strokes for a satisfying writing or drawing experience. VERSATILE. This fiber pen is versatile for drafting, sketching, journaling, note-taking, or detailed artwork. The versatility of the pen makes it suitable for creative endeavors and professional