Mine had Rubicon factory diamond plate sliders on it when i bought it so i just re-installed the screws and left it like that for 11 years. I recently just removed the sliders for the first time and they are actually little nutserts. I haven't decided what to do with them yet, I removed the sliders in preparation for the new ones that are coming. I wanted to leave them in case they serve a purpose for the new ones, if not I will probably drill them out.