The Pilot Parallel is a major breakthrough in calligraphy pen design. The “Parallel Structure” nib consists of two parallel plates, allowing the writer to create much sharper lines than with other calligraphy pens. It can also create gradated colors by transferring ink from one pen nib to another, allowing two different ink colors to then be used from one pen nib. Parallel Pens come with one black and one red ink cartridge. These pens can be used by both right-handed and left-handed individuals.