I bought these recently. I'd suggest being extra careful at installing them however they are fantastic! The hook thingie is plastic though so it could potentially snap if you don't pay attention! Buy 1 get 1 free! They're on my minivan right now, they bend into the screen, it's pimpin time! http://www.tirerack.com/accessories/valeo/ultimate.jsp
I wanted one for my back windshield, I just didn't see it available. The thing was supposed to be 13 inches, I had to settle for some weird brand from the local autostore. Did you get 1 free? :shrug: