Clear Demonstrator Fude / stub nib / rainbow nib fountain pen for Calligraphy, Signatures, Journaling. Transparent fountain ink pen High-tech look clear fountain pen, elegant enough to carry around, tough enough for everyday use. Calligraphy stub nib, artists Fude nib or rainbow extra-fine nib    Fill from bottled ink with the included converter, or use ink cartridges. There are three nib options: ** EF nib ** Extra fine stainless steel nib with a rainbow surface - every nib is different. ** 1.5mm stub nib ** Stub nibs give wider lines when writing down than across, they make your signature and writing more distinctive. Also called calligraphy nibs or italic stub nibs. This is a wide stub suitable for calligraphy, art, or everyday writing for the brave! ** Fude nib ** Vary the line width by changing the angle of the pen to the paper. Made to mimic a brush pen for Japanese Kanji writing. Popular for Manga, calligraphy, Chinese and Japanese scripts.