Koh-I-Noor Rapidograph H.R.S. Sets | BLICK Art Materials
Amazon.com : Koh-I-Noor Rapidograph Slim Pen and Ink Set, 7 Assorted Pen Nibs and .75 oz. Bottle of Ultradraw Black Ink, 1 Set Each (3165SP7) : Office Products
Koh-I-Noor Rapidograph Fine Artist 7 Pen Set with Ultradraw Ink (3165SP7A)