Staedtler triplus triangular fineliner pen case 10+3 color Staedtler Triplus Fineliner 10+3 Free (13 in Total) Assorted Colours Staedtler Triplus Color marker and pen features triangular barrel Markers contain Dry Safe ink can be left uncapped for days without drying up Multicolored Pens are ideal for drawing, coloring in the classroom or adult coloring books. For fatigue-free writing and the fineliner pen features line width of approximately 0.3 mm.