Street Tee is a quality brass fitting used to connect lines for air, water, fuel, oil, and inert gases. It has a 3/8" NPTF thread design which is able to work under pressure at up to 1000 PSI at temperatures ranging from -65F to +265F. Its forged construction is high quality, very durable, and will not rust. This Street Tee is perfect for connecting hot water, oil, gas, cold water, fuel, coolant as well as HVAC and RV applications or transmission and diff engine lines.