Kingston Brass KB604AL Restoration 4-Inch Centerset Lavatory Faucet with Metal lever handle, Polished Chrome and Polished Brass Brass construction Duraseal washerless cartridge 4-Inch center set installation Max 1.2 GPM/4.5 LPM Water Flow Rate At 60 PSI (ASME standard) Compliant with California Energy Commission Title 20