This Quality Product Offers an Affordable, Economical And Practical Solution for Purchasers of Charity And Non-profit Organizations. 5.25" long, the 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 fine point delivers consistent color quality for bold colors and great erasability. Certified AP nontoxic and conforms to ASTM D-4236.