Pilot - Parallel Pen Ink Cartridge - Mixable Colour - Black

Pack of 6 single color refills for the Pilot Parallel Pen. Mixable color refills can be switched in the pen to create gradated color lines in addition to standard colors. The Pilot Parallel Pen represents a major breakthrough in calligraphy pen design! Its nib consists of two parallel plates, allowing the writer to produce lines sharper than existing calligraphy pens. You can also create gradated lines and mixed colors with its special mixable color ink.