These slim, triangular-barrel pens are ergonomically designed for comfortable drawing and writing. Super fine 0.3 mm porous points are protected by a metal-clad tip. Staedtler's ink won't dry out even if the pen is left uncapped for several days. - Staedtler Triplus Fineliner Pen - Pale BlueTriplus Fineline Porous, LT BLU -