Staedtler Triplus Fineliner Pen - Assorted Colors, Set of 40 - Walmart.com
Amazon.com : STAEDTLER Triplus Fineliner and Fibre Tip Pen Set, Mix & Match Feature, Ergonomic Triangular Shape, Dry Safe, in Practical Box with 20 Fineliners and 20 Fibre Tip Pens, 34 SB40,