They perfectly match the trim that is already on the bottom of the car, making them look like a continuation. I had to drill a hole in each front one but that was ok as I don't plan on taking them off any time soon. I had to jack up the car and remove the wheels but this made the installation a lot easier. There were no instructions, but I found a nice video from "AutoTechWorld" on YouTube where everything was done step by step. I also had to go to the hardware store and buy clips to install them. Contains only screws and washers.