Artline's fineline pens come in 8 different colours and can be used for a range of writing, drawing and sketching applications, from story writing or designing to everyday use at home, school, university or the office. The markers have a plastic tip, 0.4mm nib and are made with high-quality, blur proof ink that will not bleed through paper when dry. When ink is wet, you can apply water with a brush to get a watercolour-like effect.