AIR calligraphy set from ONLINE CALLIGRAPHY SET: Fountain pen including blue combination cartridge, two additional grip inserts, and nibs in three line widths (0.8, 1.4 and 1.8 mm). BEGINNERS AND PROFESSIONALS: With a bit of practice, calligraphy beginners can use this calligraphy pen to conjure up beautiful results on paper. This fountain pen is also an eye-catcher for professionals.