The Staedtler Triplus Fineliner is a superfine long-lasting pen with water based ink. The Staedtler Triplus Fineliner produces a 0.3mm line. With a metal clad tip and ergonomic triangular barrel the Staedtler Triplus Fineliner provides effortless and fatigue free usage, ideal for people who spend a lot of time writing or drawing, making it ideal for home, office or student everyday usage. This fineline pen is also dry safe in line with ISO 554 tests, meaning it can be left uncapped for days without drying up, and aeroplane safe thanks to an automatic pressure equalisation which prevents in flight leaks. Staedtler Triplus Fineliner ink washes out of most textiles and its clip barrel guarantees long service life.