include: Brass Concealed Shower Valve, Brass 12 in (30 * 30cm) Rainfall Shower Head Square, Brass Hand Shower, Shower Hose Pressure balancing valve cartridge, the valve body contains an adjustable water pressure device, this brass valve directs water flow to two showering functions, pressure-balancing valve maintains water pressure and controls temperature. With the built-in shower column, the installation is therefore behind a partition and is therefore not visible, thus making the shower space more aesthetic. The fact that the installation is hidden allows you to save space in your shower area Using large water supply pipe mounted: G1 / 2 "and the built in supercharging device, it's water flow is one time bigger than common faucet valve. Even if you use very big shower head or many body jets, you can enjoy the strong water. Professional-grade performance: The high-pressure leak-proof valve core ensures stable water flow, and the seals extend service life, making it suitable for high-standard scenarios such as home bathrooms, hotels, and gyms.