Now the kit comes with a little paint brush DO NOT USE IT it's junk..it will start falling apart after a couple strokes. Buy a little foam brush instead. After ur calipers are all sanded, you can clean them with the break cleaner that comes with the kit. You want to make sure you have to paint all the calipers within a couple hours as the paint dries up really fast. Apply a first light coat, wait 15mns then apply the second one..and so on. One can was enough to do the 4 calipers, even though these are bigger than standard.