Ultrasonic cleaner won't shine brass. But it cleans inside and out (including primer pockets). When mine come out of the ultrasonic cleaner I just use my air hose to blow the water out of the case and off the outside, lay 'em on a towel and they are dry in a few minutes. I polished my brass when I first started reloading but figured out pretty quick it had no effect on anything. They were nice and shiny until I fired the new loads. Not worth the time just to make them look pretty while they are waiting to be fired!