If a hole punch is used, the paintwork will be completely destroyed. Initially I installed manually and the finish went poorly. I used the Impact as soon as the photo shows the result after 1 month. I ended up ordering replacements because they looked so bad. I then used a plastic bag and still haven't seen any rust. To protect the lug nuts during installation or removal, I used a plastic bag as a sleeve between the lug nuts and the bushing. DO NOT USE IMPACT GUN. Be sure to use a different section of bag for each collet nut to minimize potential damage from bags torn under pressure. I've tried thin plastic bags, thick bags, I've folded them in half, I've even tried zippered bags. All the plastic bags seemed to protect the finish (but the finish is definitely flimsy and delicate). When you take care of the finishing, you need to be careful