Previously I bought some used Cat40 pull studs from Arno, and SK40 pull studs from Franz, but I can't find Franz' listing any more (he has a lot of different pull studs listed with DIN2040 and SK40 in the title, so I think there is more to search for, suggestions appreciated). I never knew of a source for the new CAT40 pull studs, where can I purchase them?
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