The ErichKrause P-300 permanent marker is a chisel-tip pen for writing and marking on many surfaces, including paper, cardboard, glass, plastic, and wood. Its blue alcohol-based ink dries quickly and is resistant to water, light, and UV exposure. The round barrel and matching cap make it easy to identify and use in the office, classroom, or at home. The 0.5 to 4.5 mm line width gives you both fine control and broader strokes. This listing includes a box of 12, making it suitable for regular everyday marking tasks.