I've seen videos of people removing wheels on high-end cars and the sockets they use appear to have some sort of coating around the outside of the socket to prevent marring or scratching of the wheel. Are these actually a thing or are they just being dipped in a coating (DIY)? I'd really like to get at least one for my car since I have very black and very shiny wheels that aren't going to look too good with a big silver gouge along the barrel of the lug nuts.