Solid Brass Tee 3an Male To 3/8-24 Female Inverted Flare Tee On 2 Sides For 3/16" Brake Lines With 7/16 Mounting Hole 1pc Used To Connect A Stainless Braided Flex Hose To The Rear Axle For The Hard Brake Line. And Match the thread and flare type to the lines being connected. It is important that both flare type and thread match for a leak-proof connection. SAE 3/16 Tube size x 3an To 3/8-24 thread size.