Lock out hibs how many types?

Hi guys im trying to replace my front hubs cause the bearings went out and i priced bearings and there $90 a pop so i said forget that an called up the slavageyard and found some but the way i understood theres 2 different kinda lockout hubs and they said the ones they got where not the same as the ones i got so im wondering if this is ture or a mistake on there part?


I know there auto locking which u dont have to lock the wheels in and there lockouts where u got to lock it in at the wheel. But isnt that the only 2 kinds?