nickjagg14i believe that he was asking if you could change the nibs on one pen. As in, writing with a bold nib and then, switching to a fine nib for drama, and not have to pick up a different pen with that different nib. I'm betting that they are not interchangeable and probably due to problems maintaining an ink-proof seal. Not harshing on your reply, nickjagg14.
DrdavilActually, yes. Conklin offers replacement nibs through several retailers (and most of the Monteverde replacements will fit as well). Also, many (maybe most) of the vendors that sell #6 nibs under their own brand will fit as well (a #6 nib manufactured by JoWo is the deciding factor).