The Pilot CD/DVD Marker Extra Fine is specially designed for safely writing on CDs, DVDs, Blu-ray discs, and other non-porous surfaces without damaging the media. Featuring an extra fine tip, it produces crisp, precise lines for clear labeling and detailed writing. The quick-drying, permanent ink is water-resistant, fade-resistant, and smudge-resistant, making it ideal for organising digital media, archival storage, office use, and home applications.