The shower system set main body is made of high-purity brass, prevent corrosion,shower system mixer has strong anti-high pressure capability. The overhead shower have soft silicone knobs, and you can knead the silicone knobs for easy cleaning of dirt and limescale. The head shower distributes the water evenly in the head shower and ensures an even flow of water through the densely arranged ABS nozzles. For a relaxed feeling. If you have any questions about the bath & shower systems,, please feel free to contact us, we have good customer service and are committed to bringing you a pleasant experience. This shower column has a simple structure and is easy to install. It has a standard 1/2-inch with good compatibility.