KOHLER K-15182-4DRA-CP Coralais Single-Handle Centerset Bathroom Sink Faucet with Plastic Pop-Up Drain and Lift Rod, Polished Chrome Ceramic disc valves resist deterioration and mineral buildup, resulting in long-lasting, reliable performance Single-handle centerset faucet for 4 in. Centers with pre-assembled handle and flexible supply hoses to simplify installation Premium metal construction KOHLER finishes resist corrosion and tarnishing, exceeding industry durability standards two times 1.2 GPM (gallons per minute) maximum flow rate