●[Size] The thread size of 6an is 9/16-18 UNF. ●[Material] Aluminum alloy 6061-T6. ●[Seal] The AN flare is sealed at a 37 degree angle. ●[Application] AN6 tee fitting can work with oil, fuel, e85, water, fluid, coolant and air. ●[Warranty] EVIL ENERGY provide this product 3-month warranty.Any problem you might have,please feel free to contact us via Amazon message.