What nib size does the Yongsheng Junlai 630 use and how does it write?

It features a two-tone #8 iridium medium nib that delivers a silky smooth, consistent ink flow without scratching. You could screw off the nib section and soak it into warm water for 5-10 minutes, then dry and reinstall back for pen maintainance.

How do I refill the pen and what type of ink should I use?

The Yongsheng Junlai 630 is a piston fountain pen and only support ink refill via piston system. Simply twist the end cap while the nib is submerged in bottled ink. It is recommend to use non-carbon ink only (e.g. Hongdian Bottle Ink).

Is this pen suitable for long writing sessions or large hands?

Yes. The lightweight 0.72 oz / 20.5g (Weight without Cap) acrylic design and balanced grip make it comfortable for extended use, especially for larger hands.

Brand	Wikult
Model Number	YS 630
Color	ワインレッド
Material Type	アクリル
Number of Items	1
Size	1 count (Pack of 1)
Point Type	ミディアム
Ink Color	ブラック
Included Components	万年筆、レンチ。
Package Dimensions	20.3 x 8.7 x 4.3 cm; 105 g
Shredded Shape	リフィラブル

Yongsheng 630 アクリル万年筆 イリジウム ミディアムペン先 ピストン充填システム付き ワインレッド クラシックデザイン 滑らかな筆記ペン (ゴールドトリム)

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Yongsheng 630 アクリル万年筆イリジウムミディアムペン先ピストン充填システム付きワインレッドクラシックデザイン滑らかな筆記ペン (ゴールドトリム)