Micro smooth and shine replacement rollers for the micro nail device item details each pack contains 2 micro smooth rollers and 2 micro shine rollers the micro shine roller is white in colour and is used to give a natural shine to the nail please note that the warrantys for micro pedi electrical goods are two years from date of purchase details can be found in the information booklets provided with the products led lamp needed more information safety warningkeep out of reach of children