http://ecx.images-amazon.com/images/I/51eF5OD5RxL._SY300_.jpg There are plenty of nib swapping options for other Jinhao brands such as the x450 and x750 but there are little nib options for Jinhao x250's. So... Do you know what type of nib fits on the Jinhao x250? I know that the #6 Nib rumor is false and does not fit (I tried to fit Jinhao x450 nib in x250, too big), and some say a #5 nib may fit (but has not been confirmed, may also be a rumor). However, there is a Reddit user that used a flex vintage pen from a Wahl pen here: https://www.reddit.com/r/fountainpens/comments/3eykvv/my_first_frankensteined_pen_a_jinhao_250_with_a/ but that nib is quite expensive and hard to find... Overall, do you know what nibs fit in the Jinhao 250? If you have a Jinhao 250 and have nibs you could try together we can find a solution.