I am not sure if someone has covered this topic or not but I am planning to add halos to my headlights and need to know the sizes of lens? However I seen a post, think was from 2015 where someone installed halos on headlights and fogs. But they haven’t been active for few years, so prob won’t get a response. I suppose I could use oven/heat gun to open headlights and measure with a caliper if nobody knows? Any help greatly appreciated

I believe it is a 3". But I would reach out to someone like TheRetrofitSource.com, they would know and have great customer service.