They fit the round hole in the bumper, but that's as far as it went. Had to modify the pre-existing light brackets behind the Iron Cross lights to the Iron Cross bumper. They wired up easily enough. I had already installed LED lights before and the plugs on the new lights were a match so that helped tremendously. That was nice because the switch that came with these lights was cheap(my opinion). The 10° spot beam is just that. The box shows options of varying degree patterns but I didn't see any when ordering and would prefer a wider pattern. Aside from the mounting, they are exactly what they say they are. Only time will tell how strong they are.