Can be dry-wiped from whiteboards and surfaces like glass and porcelain without leaving a trace. Fast-drying, low odour. Locked tip. Dry safe – can be left uncapped for days without drying up. PP barrel and cap guarantee long service life. Airplane-safe - automatic pressure equalization prevents pen from leaking on board aircraft. Line width approx. 2.0 mm. Refillable with refill station 488 51. Available in stand-up STAEDTLER box.