This video covers a variety of topics about nib sizes, and what designates conventional nibs from stubs, italics, obliques, and flex nibs. Nib Size Abbreviations (0:33), Common Online Fountain Pen Abbreviations (1:55), Japanese vs. Western Nibs (2:25), The Nib Nook, comparing writing samples (3:03), Stub and Italic Nibs (3:52), Writing with a Stub (5:22), Oblique Nibs (6:16), Flex Nibs (7:22)