Kingston Brass KB86520ZX Millennium Tub and Shower Faucet, Polished Brass Cast Brass Construction For Durability Pressure Balance Washerless Cartridge Min: 1-Inch, Max: 1-5/8-Inch For installation Max 2.0 GPM/7.6 LPM Water Flow Rate At 80 PSI on Showerhead Compliant with California Energy Commission Title 20