The cheap China parts don't line up, and as a result, the inner part holding the bulb, doesn't hang right and you have to reach up inside and grab the whole socket assembly to screw a bulb in place.  Both set screws stripped.  Tossed box away thinking all was good so can't return.  For the price, this sucks.  Going to have to super glue the whole thing and for the price, I shouldn't have to.