Professional-grade permanent marker pen designed for precision writing and marking. Features a refillable design that reduces waste and extends product life, making it economical for frequent users. The Japanese bullet tip delivers consistent, clean lines ideal for labeling, technical drawings, and detailed work. Quick-drying black ink resists smudging and fading, ensuring durability on paper, cardboard, plastic, and other surfaces. Pack of 10 provides excellent value for classrooms, offices, studios, and professional environments. Refillable cartridges mean you can replace ink without discarding the entire pen, supporting both your budget and sustainability goals.