Them thingys that go over the spindle nut.
*LOL*
Ya know, after all these years of dealing with those things, I still don't know what they are actually called.
The dealer will look at you like your crazy ('cause that's what they do best), spend half an hour looking up the part #, then tell you they can order them for you. Should be here sometime in the next month. And you gotta pay for them up front!
Go to the local wrecking yard, give the guy a couple bucks to buy a beer;
It's a done deal!