The rim underneath the paint is already semi polished. Once the paint is removed, some aluminum polish brings it out the rest of the way. The trick is to tape off the area you don't want the paint to be removed and make sure you get the specific Aircraft paint remover. I found out the hard way that if you just use regular paint remover from Lowes, Home Depot or an automotive parts supply chain like Advanced Autoparts it takes much longer. It took me forever to do the rear rim. I then purchased the specific paint remover from an automotive paint store. It took about 4 hours for the front rim start to finish. The other thing to watch is do not attempt to remove the paint about an inch from each side of the center ridge of the rim. This paint is hard to remove and it is not polished underneath. Oh, I saw the same Aircraft paint remover at Walmart for about half the price. This is an easy project and makes the bikes look much better, that isif you like shiny rims.