I am one of the few that have seen and tested these in person. I had towels on all my machines till I tried one of these PinShields. These work great for working on pins without worrying about the old towel cover sliding off the end of the machine taking all your tools and pinball parts off with it. It grips the glass so it does not slide off and looks really clean since it is not hanging over all the edges. He is already working on the next version, improving the logo so it has a nicer finish.