The enclosed screws did not last, so I used the originals.
The have not yet occurred to me lost, despite that I did not use these splice on the holders (in all weathers at 200 km / h tested)
Probably I will soon use other holders, but this is due to my personal taste, as the license plate holders themselves :-) (saying Optical Tuning)
But I'll probably keep this plate holder forever, they are easier to store as normal, and sometimes you can get a replacement holder always need (car purchase / transfer)