Just make sure you put the washer underneath the weight before screwing all of it together.  I saw where another buyer said it was unstable. Mine was, too, when I just sat the toilet paper holder on top of the weight as opposed to attaching it to the weight. Also, you want to turn it to the opening is facing away from where you are pulling the TP. Otherwise it'll just fly off the holder. Saw where another user complained about that happening. It won't if you turn it around.