In order to maintain the highest levels of quality, all of our light manufacturing is done in- house. Consequently, our parts look better, fit better, and our gaskets seal better. Another point that sets our lights apart is our compliance with FMVSS-108/DOT/SAE requirements. Simply put, if we would not install those lights on our own personal vehicles, we would never sell them. All in all, our lights are a superbly engineered product line that your car would be proud to wear.