I believe the branding on the OA YKK reads “Universal”.
https://www.ykkfastening.com/products/search/detail.html?pdid1=OLD+AMERICAN(R)
https://leathercrafttools.com/item/11887/
https://www.ykkfastening.com/products/search/detail.html?pdid1=OLD+AMERICAN(R)
https://leathercrafttools.com/item/11887/