Premium Shower Faucet Set: All metal design; one-piece shower valve is constructed of high-quality solid brass, the sturdy brass construction can prevent corrosion and make the waterfall shower set longevity, you can feel good quality after you receive it cUPC certified and anti-scald advanced pressure balance ceramic disc cartridge with cUPC certification can effectively protect you and your family from scalding injury caused by sudden changes in hot water or cold water pressure; it comes with installation instructions, making your installation more easily.