Handy-sized whiteboard marker with universal locked tip for variable line widths of approx. 1-2 mm DRY SAFE: The pens can be left uncapped for days without drying up (test ISO 554) Airplane-safe: An automatic pressure equalization prevents the pen from leaking on board aircraft Can be dry-wiped from whiteboards and surfaces such as glass and porcelain without leaving a trace Fast-drying, low odour With clip PP barrel and cap guarantee long service life STAEDTLER box containing 4 colours Locked bullet tip approx. 1-2 mm