Here are some photos of the brake calipers. The top photo is of the rear calipers. The one on the left is before rust removal with the battery charger. and the right one is after. It does a pretty good job of getting the heavy pitted and flakes of rust off. I then pop out the pucks with the air line and then split the calipers and bead blast the outside. The bottom photo shows a front caliper after its been blasted and painted. Now it just needs the new seals fitted and its ready to be bolted back together.