The manufacturer of these has a real quality control problem. The threaded holes in the triangular wooden bracket do not line up with the holes in the end of the grab bars. In 2 of the 3 bars I bought, I cannot get all three screws installed at the same time without drilling out one hole in a steel part! In the one that I can get the screws in, they are rubbing the holes very hard. Also, the hole into which the adhesive is injected is too small for the adhesive tube's tip. This makes a lot of the adhesive go to waste. Very frustrating! I hope this is fixed before I need bars again.