On the right: .223 brass that’s been ultrasonically cleaned. On the left: 5.56 brass that’s been both ultrasonically cleaned and tumble polished. The tumbler has a fresh batch of media, not contaminated with powder and lead residue from pulling double duty as cleaner and polisher. I might just go back to tumbling all of my brass after cleaning. It doesn’t make it work better, but it looks nice. :)