Bock fountain pen nib with Bock housing type 020 #5 polished steel - twin italic point

Bock type 020 fountain pen nibs are not available in a kit compatible housing

Bock's type 020 twin calligraphy fountain pen nib is a size 5 nib with twin points of different widths, to create a double calligraphy line.

It's demand for ink on the paper is quite high, and it therefore features a specially made feed to cater for the demand. Because of it's feed, it isn't really suitable for swapping into pens that won't take a Bock housing. There is nothing to stop you from doing it of course, but you may find it runs dry, so it's best suited to those makes of pen where it will screw in as a direct replacement. Those include most of Kaweco's models, Visconti, Loclen, Karas K and Karas Starliner.