Including Valve: The shower kit includes a pressure balance valve, when the cold and hot water supply pressure suddenly changes, the valve body will stop water. Don't worry about being burned by hot water when the cold water stops. High-quality Shower Set: Our shower is made of high-purity and meets cUPC certification. Including 4'ABS shower head and metal bathtub faucet, the surface is high-standard matt black electroplating treatment, scratch-resistant, corrosion-resistant, strong and durable. Touch-Clean Nozzle: Our 4inch shower head consists of a soft water nozzle, which allows you to easily wipe off the calcium and lime with your fingers, so there is no need to soak or use chemical cleaners. Complete Shower Kit: Our shower faucet set includes: 4"ABS shower head, bathtub faucet, pressure balance valve, valve decorative cover, manual and other accessories. American standard interface: The shower valve and the decoration kit with NPT 1/2 inch connecting thread are completely consistent with the American market standard. We have an installation video for reference.