Set of 4 Dry-erase marker contains specially formulated low-odor, dry-erase ink. Perfect for classrooms, small offices and homes. Can be used on most whiteboards, glass, unpainted metal, glazed ceramics and nonporous surfaces. Dry-erase marker with chisel point delivers consistent color quality for bold colors and great erasability. Certified AP nontoxic and conforms to ASTM D-4236.