Multifunctional water system: integrates hot and cold water mixing valve for precise temperature control, and comes standard with rain shower overhead spray, hand shower and bathtub faucet. It supports switching between more than 2 water flow modes to meet the needs of showering and bathing. EASY OPERATION: Single lever design for effortless flow and tempreture control. You can switch the knob to open rain shower head or handheld shower head as you like (can not both together). STANDARD THREADS: Shower Export ,shower arm and shower mixer valve are 1/2" NPT threaded. . BUILT-IN VALVE, less parts outside the wall, easier to clean, ALL METAL SHOWER, durable and make your bathroom high quality Remarks: This full set please let the professional plumbers to install it,then can let yours enjoy good bath in the bathing