YSTD&reg; Baoer 051 Smooth Stainless Black Medium Nib Study Business Fountain Pen Gifts (Black) BAOER Pen is inspired from the long history and splendid traditional culture of China, which contributes to the fine artistic elements and design concept; and it's processed and finished by world-leading techniques. Thanks to the original design, top materials, and exquisite craftsmanship, it stands for the excellent quality, the trend in the trade, the valuable for collection, and the witness to history. Converter: Removable ink converter( may be replaced with international standard size ink cartridge. Also, you may use bottled ink.) Features: Classic elegance, writing is very stable sense Diameter: about 12mm/0.47 Length: 13.5cm/5.31