I want to say 2" but I'm not sure.
I know its 13mm
1998 Jeep Cherokee 4.0L AW4/NP231 211k+
"Approximately 80 percent of our air pollution stems from hydrocarbons released by vegetation, so let's not go overboard in setting and enforcing tough emission standards from man-made sources."
My goal is to have 20 lights around my XJ.