Have a pulsation when braking. Think it's rear rotors, but will probably do all 4 while I'm into it (approaching 70K on originals). The question is are these the "hat" type or am I looking at bearings and seals also?

Thanks in advance.

 

They are hub and bearing assemblys. Do not have to replace the seals. Just make sure you grease them. also lube caliper slides.