Stainless steel shaft. The outer decorative part is made of a stainless-steel tube or carbon fiber with a diameter of 32 mm. Reliable O-ring rings are used to connect the base to the valve and the hose connector. Removable saucer on lapping, diameter 18 cm. A removable diffuser is included to adjust the thrust. None of the materials used in the construction of the product is subject to corrosion!