1.Brushed brass shower system equipped with touch clean soft, rubber nubbins (spray holes) that allow you to easily wipe away calcium and lime build-up with the touch of a finger. This is particularly helpful for areas with hard water. 2.Trim and all parts of this brushed gold shower faucet are constructed of metal(brass and stainless steel) - ensuring durability and providing aesthetic appeal. California CEC list (1.8GPM 6.8L/MIN) 3.Rain shower system with dual function cartridge - separate volume and temperature controls. How to install sumerain S3223 brass shower system? Please watch the video. 4.NPT 1/2" connecting thread,designed to easily install with standard U.S. plumbing connections for saving man-hour cost during installing. 5.Sumerain preferred authorized online dealer for guaranteed warranty coverage,all items of this gold shower fixtures covered under Sumerain's limited lifetime warranty.