Formulated with a unique water-based ink that doesn't seep through paper or onto the surface beneath, so now you can use both sides of the page. Glides on the paper to provide all the benefits of a bold, paint-like effect without the hassle and delay of priming. Boldly marks on metal, wood, ceramic, glass, rock, canvas and more. This package contains twelve (12) brush tip markers in assorted colors. Made in USA.