Posted on June 25, 2019 by admin Call for beta testers: S6E-XF We are looking for five beta testers for our potential new product S6E-XF steel flexible nib in JoWo #6 housing. 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: Review of FPNibs Flex Nib with J6ENext post: A review of the upcoming S6E-XF steel flex nib for JoWo #6 pens