The T&S Brass B-0199-01-F12 aerator delivers a flow rate of 1.2 gallons per minute (GPM), making it an efficient choice for various applications. Designed with 55/64-27UN female threads, it ensures easy installation and compatibility with standard faucets. This low lead aerator is a reliable replacement for the B-0199-01F-12 model, promoting safe water usage while maintaining optimal performance. Ideal for both commercial and residential settings, it enhances water efficiency without compromising on quality.