This rain shower head is really nice! The shower head is 9 inches in diameter making the coverage great! It has 105 jets and the pressure is great. Absolutely no tools are needed to install the extension arm or rain shower head. It comes with the extension arm which is a big plus. The extension arm is 11 inches in length and can be adjusted at 180 degrees and a 2-foot vertical movement range. The extension arm is made of solid brass. The shower head will fit any hand shower or shower head. There is also plumbers tape included. The chrome finish looks really good. Overall this is a awesome rain shower head.