Nikko
Nikko is a stationery brand from Japan, made by Tachikawa Pin Mfg. Co., Ltd. 3 guides to Nikko products, plus 1 roundup that include Nikko. More: official site tachikawa-net.jp.
Nikko guides and roundups
Nikko G Pen Nib: The Wide-Line Manga Dip Nib
Nikko G pen nib by Tachikawa: a Japanese manga dip nib that writes the widest line in its range and varies it with pressure, sold as 3, 10 or 100 nibs.
Nikko Maru Pen Nib (659): The Finest-Line Manga Nib
Nikko Maru pen nib (N-659) by Tachikawa: a rolled steel dip nib that writes the thinnest line in its range and still varies it, for faces, eyes and hair.
Nikko Nihonji Pen Nib (N-555): The Even-Line Starter
Nikko Nihonji pen nib (N-555) by Tachikawa: a Japanese dip nib that writes a medium, even line without swells, and the one Tachikawa recommends to beginners.
Best Dip Pens for Beginners: Nikko G, Zebra G & Holders
Best dip pens for beginners on published specs: Nikko G and Zebra G nibs, the Tachikawa T-40 holder, the Brause 361 Blue Pumpkin, Speedball's set and Kakimori's nib.