Paper mate flair ultra fine pens use a quality water based ink that is quicker to dry preventing smudging specially formulated to prevent ink bleeding through on paper the ultra fine tip provides a crisp and clear 05mm line and is metal reinforced to prevent tip damage this pack contains 12 black pens felt tip writing pen water based ink that dries quicker designed to prevent ink bleeding through paper ultra fine tip for crisp 05mm line metal reinforced tip to shield against damage ink c