Kingston Brass KS8451DL Concord 4-Inch Centerset Lavatory Faucet with Push-Up Pop-Up and Plate, Polished Chrome Brass construction 1/4 Turn ceramic disk cartridge Single hole installation Max 1.2 GPM/4.5 LPM Water Flow Rate At 60 PSI (ASME standard) Compliant with California Energy Commission Title 20