Colony® PRO 4-Inch Centerset Single-Handle Bathroom Faucet 0.5 gpm/1.9 L/min With Lever HandleThe Colony Pro single handle centerset bathroom faucet from American Standard is a quality faucet with both style, and value. A maximum flow rate of 0. 5 gallons per minute helps to save water. Memory position valving allows the user to turn the faucet on and off at a preferred temperature without making any handle adjustments, while an adjustable hot limit safety stop helps to reduce the risk of accidental scalding.