They have the measurements wrong as if you look at them. They are 65 mm across the top and 62 mm internal clip. as I said I've bought these cheap cr** and only fitted three on in January 2014 and may 2014 come they have faded and the black turned grey. I've now lacquered the last one and will see how long this takes to discolour if at all as the lacquer cote may save it.