The writing behaviour does not depend on the material of the nib but primarily on the iridium tipping, the nib grind as well as the construction of the nib and the feed; steel and gold nibs can therefore write similarly well. Waldmann uses nibs by Bock and, according to more recent reports, increasingly also by JoWo; both manufacturers deliver nibs of equally high quality. Bock steel nibs are also found at Montegrappa and Faber-Castell. A noticeable difference between Bock and JoWo is in everyday use hardly perceivable.