If you've tried to remove your fog lamps, you probably found that the mounting bolts are either rusted or frozen in place. For some reason, Toyota chose to use coated steel bolts with a Phillips head for this application.
Once you get the old bolts out, why put them back and set yourself up for the same troubles in the future? Our replacement bolts are 18-8 stainless steel with a conical flat head to positively seat them in the fog lamp housing. No more Phillips - these are hex (Allen) head and come with the proper wrench for installation and removal.