Muteki SR35 lug nuts are made of steel for the best strength and resistance to fatique. Bolting down your wheels firmly is a true safety issue as much as performance. Make sure you get a quality set of lug nuts like Muteki. Multiple colors are available. Both a lug nut socket and lock socket are included in the kit.
They’re lug nuts, so they do what they’re supposed to and it’s nice to have the area to thread it on by hand. My only gripe is that the lugs are 17mm and the lock is 21mm (stock size), so you need two different sockets to take em off.