Hi Beeboper, will try and dug some out but if not all I can say is that they have been a safe purchase in as much as still looking good regardless of weather extremes. I did have then coated when fitted and advised to use nothing more than your car washing foam {I use Autoglyn products, have for years} and not any specific alloy wheel cleaner due to potential abrasive additives contained. If the Bronze had been available then would have been a tougher choice but still happy with mine. Hope your choice {eventually!} enhances the look of your Golf regardless.