The film shows the removal of the rear lamps, the bumper on the Opel Corsa D, and installation of parking sensors.
We used steelmate flush mount sensors because of the way holes were prepared. The holes were not drilled in this case, but made (cut out) with a special tool (something like pin punch), so that the edges around the sensors were not jagged. This method allows the sensors to be mounted flush with the bumper surface, without the use of additional flanges. It looks like the factory installed (that's why we chose it).