Unfortunately I have to give many other reviewers of this filler rights: Although the filler looks beautiful, is processed valent, is (for me) comfortably in the hand and is ultra-stable, BUT: Unfortunately, the filler has an extreme tendency to drying. Why is that exactly, I can not say. But after 2-3 days noticeably dried ink collected in the spring, the almost black instead of blue comes out then. The liquid is gone by when writing. After 5-6 days it is catastrophic, it is necessary to clean the spring or multiple prescribe etc ... so totally unfit practice. Pity, because with the cheaper "Jotter" shows Parker but good that it might (t) s ...