Washable markers feature fine points for detail & accuracy. Long-lasting, super-resistant, 2.75mm nibs provide durability. Superior ink delivers a smooth laydown & accuracy. Washable ink won't bleed through paper, making these markers mess-free. They are ideal for lettering, drawing, outlining & detail work. The caps are ventilated & meet all small parts consumer safety standards. Ink is certified AP nontoxic.