Quartet Low Odor Dry-Erase Markers, Fine Tip, Assorted Colors, 6 Pack (659511Q) Non-toxic, low-odor dry-erase markers provide smooth writing DryGuard ink ensures markers will not dry out if left uncapped for up to two days Conforms to ASTM D4236 safety standards Write thin lines, in small spaces with fine tip Slim marker barrel for enhanced comfort and is perfect for presentations