As a hesitant buyer in the Automotive industry I was excited to try out these lug nuts.However, as a result of using this product, I found that they were not only difficult to install, but they also scratched the rims on my vehicle. The only pro was that they looked cool. Unfortunately, this does not outweigh the dangerous cons of their poor design and low-quality steel. I would not recommend these to anyone in the market for new lug nuts..