Nothing else works against brazen parking thieves!

Have successfully applied this morning this parking barrier.
The price / Leistunsverhältnis is unbeatable.
Sure, there are much better lock, but is only for rent and for it is enough.
The material is a bit thin, but it is enough in any case.
Screws are not there.
I have been using a special drill in concrete drilled (10 mm drill), went without problems with a hammer drill.
Then you need 8-screws, dowels and washers if necessary.
The castle I have exchanged for a higher quality.
Prohibited parking, license plate, warnings, etc. Do all helped nothing ...
And looking for about 5x parking offenders in half place it was enough.
I'm curious how it goes and how long the claw remains intact.