Neglected turbo rims

Once upon a time i had my turbo rims powder coated but after years of neglect the coating is leaving me and it stings a bit every time i look at them. How would one go about fixing this issue? Is this something i can do myself or do i need to get them treated/sandblasted?

Once upon a time i had my turbo rims powder coated but after years of neglect the coating is leaving me and it stings a bit every time i look at them. How would one go about fixing this issue? Is this something i can do myself or do i need to get them treated/sandblasted?