This bathroom shower head set has the 9-inch square rain shower head. The single lever handle could easily adjust water flow and water temperature. US standard 1/2 NPT thread. DIY to install this shower set is easy.  

1. Pressure Balanced Valve with CUPC Certification: The pressure balanced valve protects you from any hurts of sudden water temperature change. The additional shut-off stop would help you adjust water flow and convenient maintenance. 

2. 9-inch Square rainfall showerhead: Air-in technology offers higher water pressure even at low water pressure, and medical grade tpe nozzles could be self-clean. Also, adjust water direction by the swivel  ball.  

3. 15-inch showerhead arm: made of high quality metal; When connecting water pipe or pex, please wrap the G 1/2 NPT connector with telfon tape to avoid any leakage.  

4. Special design of solid  shower mixer valve (Pre-embedded): Shower knob on the valve switches the bathing modes; Turn to left for hot water and turn to right for the cold water.Air-in Technology with High Water Pressure -- Pressure balance and anti-scald functions to prevent sudden change on water temperature but without reducing the water pressure.  

5. Easy Installation: All threads are G 1/2 NPT. Please DIY to install the shower step by step as shown on the attached instruction manual. Also, to ensure the safer and faster installation process, it's highly recommended to hire the plumber or contractor to install the shower system.