I had to deal with the installation, but I managed))) I did not get the nozzle straight, I could not immediately understand how the switch works in the shower mode, if just pull (as in the roller) nothing will come out, the first time I did a little knife clearance, switched hard, but then he began to switch normally, but again, Just pull will not work, you need to pull in different directions the head itself, but not the hose. Nozzle of good quality, not sifonite, hold tight. Suitable only for high tap and deep sink. The nozzle has its advantages and shortcomings, but in general, the thing is good, I recommend. I began to siphonite all over the bar in two months, I had to take it off, although I was already used to it, very sorry