Pilot Parallel Calligraphy Pen Set， 1.5 mm， 2.4 mm， 3.8 mm and 6 mm with Black and Assorted Colors Ink Refills<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> Unique parallel plate structure achieves a more beautiful and sharper handwriting than existing calligraphy pens. </span></li><li><span class="a-list-item"> Mixable colors - using two Pilot Parallel Pens each with different color cartridges produce beautifully gradated lettering by touching the nibs together </span></li><li><span class="a-list-item"> Each set comes with 4 Parallel pens: Available in 4 nib sizes: 1.5mm (Red Cap) 2.4mm (Orange Cap) 3.8mm (Green Cap) and 6.0mm (Blue Cap) </span></li><li><span class="a-list-item"> Pack of 12 refill cartridges </span></li><li><span class="a-list-item"> Refills Parallel - 12 Colors Assorted Fountain Pen Cartridge </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/51sHrGi%2BcOL.jpg" noproxy>