Quartet Dry-Erase Marker, Chisel Tip, Low Odor, DryGuard Ink, Black, 12-Pack (51-002692Q) Non-toxic, low-odor dry-erase markers with DryGuard ink provides smooth writing and will not dry out if left uncapped for two days Write thick or thin lines with versatile chisel tip; slim marker barrel for enhanced comfort and is perfect for presentations Conforms to ASTM D4236 safety standards; Black; 12-pack