The Pilot Parallel calligraphy pen features a unique nib comprised of two parallel metal plates. This allows it to distribute ink more evenly than conventional metal italic nibs while also being crisper and far more durable than a felt-tipped calligraphy pen. Its special, mixable ink allows you to create beautiful color blendings and gradations by touching the nibs of two Pilot Parallel pens together. We recommend you to try all Six sizes of the Pilot Parallel: 1.5 mm, 2.4 mm, 3 mm, 3.8 mm, 4.5 mm and 6.0 mm. With all six pens in your calligraphy arsenal, you'll be prepared for every possibility. The smaller sizes are great for adding style to regular writing, while the larger nibs are perfect for bolder uses like titles or greeting cards. You can even use them together in a single project to create additional contrast. Each pen comes in a set that includes one black ink cartridge, one red ink cartridge, one pen cleaner pipette, one nib cleaner, and an instructions pamphlet.