Review on Sooreally High Pressure Rain Shower Head 8 Inch - High Flow Rainfall Showerhead for an Amazing Shower Experience, Even with Low Water Flow - Easy to Clean, Swivel Spray Angle - Modern Style with Chrome Finish by John Kachinosky

The flat spot on the mounting frame is very small and difficult to turn with a wrench, which can damage the finish. However, you cannot see it if it is installed. A big improvement over the large mass-market shower head. The box comes with a small stamped metal key, but it's hidden at the bottom of the box behind the packaging material and isn't easily seen or accessed unless you rip open the box. The wrench is very small and hasn't been used, but given the 3" or so handle I can't imagine the right amount of force could be applied to set it properly. Just my two cents