The Uni POSCA PC-3M marker features a water-based pigment ink that produces poster-like, vibrant colors. It is lightfast, waterproof, and writes on virtually any surface without bleed-through. The opaque ink can be completely covered with a new ink application once dry. The bullet-shaped nib offers enhanced line control, allowing for both thinner and thicker strokes. This marker is ideal for various applications on surfaces like paper, card, textiles, porcelain, metal, glass, wood, and plastic. It can be made permanent on absorbent media and through specific heat treatments or varnishes on other surfaces. Line width: 0.9 - 1.3mm. Nib: Polyester/Bullet shaped.