Quoting fuel:
they are long screws. Just a word of caution, if your JDM bumper was originally from a pre-facelift model (ie the same model as those non-projector lamps came from) then you wont be able to fit the facelift projectors properly. You will need to pull the bumper and trim the bumper reinforcement metal skeleton as the projector housings are larger in some places.
I think it's the other way around. My bumper originally came with projector fogs. When I went to install blinker fogs, I had to trim the metal. Now I'm back to projector fogs and the brackets still work and hold the lights just fine.