Solid Brass Tee 3/8-24 Female Inverted Flare Tee On All Sides For 3/16" Brake Lines, 1/8 NPT Male For Connecting To The End Of Thru Frame Fittings 1pc 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 3/8-24 & 1/8 NPT thread size.