Posted on October 28, 2018 by admin B6S21KE Housing Now Available The B6S21KE housing for Sailor 21k nib and feed in Bock 250 non-converter housing is now available for purchase. View this post on Instagram A post shared by Flexible Nib Factory LLC (@flexiblenibfactory) View this post on Instagram A post shared by Flexible Nib Factory LLC (@flexiblenibfactory) Share this: Click to share on X (Opens in new window) X Click to share on Facebook (Opens in new window) Facebook Related Post navigationPrevious post: Sailor King of Pen Nib in Bock #8 HousingNext post: B8KOPE Housing Now Available