Kingston Brass KB605ALB Restoration 4-Inch Center Lavatory Faucet with Brass Pop-Up, Oil Rubbed Bronze Solid brass construction for durability and reliability 4-Inch centerset setup with 2 hole installation Drip-free washerless cartridge system Max 1.2 GPM/4.5 LPM Water Flow Rate At 60 PSI (ASME standard) Compliant with California Energy Commission Title 20