The Posca PC-1MR ultra-fine (0.7mm) is ideal for creative professionals, creative hobbyists, and artists adding finishing touches, details and contours with absolute precision. With its extra-fine calibrated tip ringed in metal, the PC-1MR has all the qualities of a paint marker– in the form of a pen! Designed for amateurs and professionals looking for an ultra-fine, dense line, it offers a rich palette of colour effects. Uni POSCA Markers provide vibrant colors for illustrations and hobbies. Water-based pigment ink is lightfast and waterproof and writes on virtually any surface - yet does not bleed through paper. The wide range of opaque colors cover each other well. Writes on metal, glass, plastic, stone, fabric, etc.virtually any surface!