Processing Licenseplate Holder is good. They are made of stainless steel and thus they should last longer than the chromed plastic things where the paint peels off quickly. The front holder has in the middle corrugations to erleichten to bending. This is necessary with curved front bumpers. My Mercedes SLK R170 has such a bent front bumper and the installation went smoothly. Fix the holder to the thigh flex until the desired shape is achieved. I can not confirm that this creates an unsightly crease in the center Unlike other. For me it looks great. However, the problems were in the assembly of the rear license plate holder. The license plate holder with its holes fit in any way to the SLK! Either you fixed him with only 2 screws or drilling new ones. I opted for the latter and the plate holder missed 4 new holes so I could easily mount it well behind.
Conclusion: Good quality for the price. Thoroughly recommended for cars with flexible attachment (if you can just screw new holes in the bumper). In cars with predetermined fastening points by thread in the body (usually at the rear) have to be expected new holes in the plate holder to drill so that it fits