Im thinking thats what it was. Idk if the actually said ball bearing, I think I just misunderstood them.

I talked to my dad a little about it and it sounds like it is the ball joints. Sense they are considered harder to do and there are two on each wheel. (maybe bearings too but idk)

Ok so wheel bearings would be simple enough.

How about ball joints? Im pretty sure thats what it is.