Im building a Brutus type system and need some caps to cover the holes in the legs... Dont want to weld plates on top (wiring and such). Also A while back before I started this build I saw some metal caps with a female threaded insert in it so I could use them on the bottom of the legs and thread casters on without needing to weld on plates (again need access to wiring). I am going crazy looking for these again. thanks in advance for the help guys.