Triplus Fineliner-box containing 20 assorted colors! Fineliner with superfine, metal-clad tip. Ergonomic triangular shape for relaxed and easy writing. Dry Safe – can be left uncapped for days without drying up. Water-based ink, washes out of many textiles. Stand-up STAEDTLER box. Line width approx. 0.3 mm. Ergonomic triangular barrel for effortless, fatigue-free writing. Water-based ink. Washes out of most textiles. An automatic pressure equalization prevents pen leakage while on board aircraft. Can be left uncapped for days without drying up (test ISO 554).