Moonman/Majohn Wancai Mini Fountain Pen with Ink Cartridge – Everything Calligraphy
JetPens on X: "The Moonman Wancai Mini Fountain Pen measures just 3.4 inches when capped. Each pen comes with an eyedropper for you to fill the pen with your favorite bottled ink!
Majohn Wancai Mini Transparent Fountain Pen Ink Sac - Etsy Hong Kong