Screw threads in downrod are not secure.  We tried to add stability with thread tape, even considered duct tape on exterior seams.  Looks pretty, but I can't even think of hanging it as it is so wobbly - downrod can't hang straight as the 3 pieces do not thread into each other or the glass pendant "nipple" securely.  Save your money - it's not usable as is.  Too much hassle to return, will donate to Habitat for Humanity - those pros can maybe replace the downrod and help it live up to it's potential!