National is a bearing manufacturer, FederalMogul is the parent company, I think they might be USA but they have "many" manufacturing locations. If they press off the bearing, try to have them save the retainer plate as they get bent up sometimes and they are not replaceable when the bearing is on. Yiou can use the tire as a slide hammer , put it on and just thread 3 lug nuts on a few threads and pull on the tire, itll come right out. The bearings are "dry" meaning they dont get oiled from the diff lube so pack 'em before you install and dont drag th, e axle over the bearing seal when you remove it (I may be thinking of the 8 3/4 on these tips)