The Staedtler Whiteboardmarker compact black is a high-quality whiteboard marker with a universal tip for variable line widths of approx. 1-2 mm. It has a dry-safe ink that can be left uncapped for days without drying up. The marker also features a locked tip and a PP barrel and cap that guarantee a long service life. It is airplane-safe, with automatic pressure equalization to prevent the pen from leaking on board aircraft.