I did both bolts on the front brake this way. I let them soak in Evaporust for a day, then cleaned and ground most of the pitting from the bolt faces with increasingly fine grit sandpaper, and roughed up the lands as well. After that and an alcohol wipe I brushed on the chrome in several layers until I had it where you see it in the pic. You can go as small as the brush surface on an open surface (about 1 sq cm), and Caswell makes fine tipped wands for more detailed application. Nice thing is when I touch up chrome that has worn areas, the Caswell stuff barely (if at all) adheres to the existing chrome, and what little residue is left is easy to clean. I try to avoid using this if possible, best to clean up and protect with wax per merziac . But it's invaluable for some situations.