The Tixx disposable pens are economical yet features excellent quality ink and a very long writing life. The fountain pen is a wonder: a fine writing instrument without a messy cartridge to change. The hybrid gel/ink roller ball pens flow smoothly and the needlepoint pen (also a roller ball) creates a very fine, opaque and precise line. The pens are sold individually and also available in a box of 12 pens (one color).