Not much pitting, it's all the same hardware in both pictures. You can see some of the black oxide finsih? still on them. I don't like to let it run for days and wear off the entire finish because I only have used paint so far to protect. some items I don't refinish either. Oil them up and install. That's as clean as I get them, there wet in that picture dry em(blow dry, although I like the oven idea) and paint the heads.

BTW I have used it to strip paint off of some real old detailed brass hinges and door pulls. It worked great and never hurt the hardware at all. Looked brand new every nook and cranny. Used the same piramids and vibrator. Very handy.