With the adoption of innovative air injection technology, simulates the natural raining to provide you with natural contact of water experience. The pressure balance valve chamber monitors the water pressure balance to protect you from scald due to sudden changes in the pressure of hot or cold water. The kit includes a shower faucet with a pressure balanced diverter valve, showerhead, multi-function hand shower, shower arm and flange, sliding bar with a flexible hose, and water supply elbow.Pressure balance valve, cUPC pressure balance spool, the top spray is made of 9 inch ABS (Plastic material) material, shower seat is made of copper, the hand is made of ABS five functions, the hose is 1.5 meters of stainless steel, and the shower arm is made of SUS304 material. Color: Black.