Our city municipality keeps adding blacktop to the road causing the road to build up higher and higher and making our street curbs more and more aggressive. It’s so bad 90% of the cars can’t clear the curb now (thanks Boise). These worked great to fill the gap and prevent this. Little pricey but they work great and I was able to bolt them down into the curb with the pre drilled holes they have so no one will nab them.