Do these badges bolt onto the grille or are they simply stickers?

I enjoy the badges that live cars that are popular in the british car club set. I miss seeing the 'badge bar' that bolts on accross the tops of your bumpers guards on your vintage roadster. It is a nice perch for your many badges to sit on w/o hacking up your restored grille.

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Patrick Leber
'84 190E 2.3
'83 Porsche 944 (track car)
'84 Porsche 944 (parts car)
85.5 Porsche 944 (sled)