Kingston Brass KS2612BL Vintage 4-Inch Centerset Lavatory Faucet with Brass Pop-Up, Polished Brass Brass construction 1/4 Turn ceramic disk 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