The Pilot CD/DVD Permanent Marker is specially designed for safe, permanent writing on CDs, DVDs, Blu-ray discs, and other optical media without damaging the disc surface. Its quick-drying, waterproof permanent ink delivers bold, smear-resistant markings that remain clear and legible over time. Ideal for organising, archiving, labelling media, and general marking on plastic and other non-porous surfaces, this Pilot marker is perfect for home, office, school, and professional use.