The Perlstrahlregler with extension works properly. He certainly saves water, because our sink now runs far slower. But I use it in a basement sink and therefore not every day, but for washing of tools or paint rollers, the part is great. If the water is turned off, the hose hangs down and is relatively wobbly. The great thing but when the water is turned on, "stretches" the hose part and is slightly stiff, which can influence the direction of the beam. One can speak it a bit align for example on one side of the pelvis. After rinsing, the whole basin can be rinsed off as easily. So all around exactly what I had imagined, from me a buy recommendation.