Lauded as one of the best calligraphy cartridge pens yet invented, the Pilot Parallel Pen has been mystifyingly difficult to find. Our great calligraphy community here in the Twin Cities has made these pens very popular since we first brought them in. The Parallel Pens come in four nib widths: 1.5mm, 2.4mm, 3.8mm and 6.0mm. The specially formulated ink is mixable: touching two tips of pens containing different colors, one can achieve remarkable effects with the blending colors. Each pen comes with two cartridges, a converter and nib cleaner. Beautifully designed and noted for their versatility and flow, these pens offer an incredible range of possibilities to the calligrapher. For a wonderful introduction to the possibilities of these pens, pick up Brenda Broadbents very clear and beautifully illustrated book, PARALLEL PEN WIZARDRY.