that's the washer mod. i don't recommend doing that. my cutoff isn't the sharpest. it looks really nice and cool but it doesn't give you the best cut off because the blue just blends in and it doesn't give me a great cutoff. You can still see a cutoff but the cutoff isn't sharp like an s2k or anything. But that's just because i modded a 7 series projector. if i modded the stanley s2k or tsx projectors then it'll still be sharp but whenever you mod with the washers it gets duller. the more blue the less sharp your cutoff is.