These are the same as the Heritance units.
PEN PARTS > Spare Parts
I have no affiliation with the site, just a satisfied customer!
I didn't see any Heritance nibs on the site at all.
The Heritance nib has a branded logo (ink bottle and quill) that Lou Metcalf spent several years getting accepted into the fountain pen community as an "upgrade" semi-flex nib to the Chinese and Taiwanese nibs that came with most kits.
Lou has suffered from some health issues and can no longer pursue this venture so the remains of existing supplies are quickly drying up.
Sorry, I got the impression you were more concerned with the feed and housing rather than the nib.
John,
Sorry if I came off abrupt, didn't mean it that way. Feed/housings are all over the web but matching up feeds/housings with particular nibs is another story.
I remember the first pen show I attended, I planned on loading up on lots of nibs and feeds for the pens I was making but after a whole day of searching the tables at the show, I came home disappointed and empty handed!
Most of the kits we use have use #5mm or #6mm nibs and what Lou did was to find a source for nibs that would fit
most of the feeds/housings used in the kits as well as offer his nibs with their own feeds/housings for those not using kits.
But as many of us soon found out, not all of the kit feed/housings were the same and just because a nib fit into a housing, didn't mean it would work properly allowing the ink to flow properly... if at all! Also, #5 & #6 nibs are about as generic as tire sizes on a vehicle. You aren't going to walk into Discount Tire and ask for a 16" tire to match the other three 16" tires on your vehicle, there is a LOT more to it than that.
That is why folks are seeking out these particular feeds/housings and nibs, because they know what they will fit.
Seeing the handwriting on the wall, I decided to switch to a source that had a different size feeds/housings and a nice assortment of nibs to fit them. Now I concentrate on my pen designs rather than worrying where I'm going to find a feed to fit or a nib to match.
Mike,
I wish you luck with compiling your list of vendors and will help provide input where I can since I have tried just about everything out there, but I think you are going to find that it's nothing but a mess out there! It is rare to find someone willing to invest literally tens of thousands of dollars to provide us with what we need like Roy (Oklahoman) has and finding a vendor who has a handful of nibs and a couple of feed/housings isn't going to be the answer to most of us.
As far as I'm concerned we don't need to look far to find what is already available.... a source for good quality, recognizable name brand nibs and feeds with the proper taps to use with them.