Union Tee, Connection Size 1: 5/16 in, Connection Type 1: Inverted Flared, Connection Size 2: 5/16 in, Connection Type 2: Inverted Flared, Connection Size 3: 5/16 in, Connection Type 3: Inverted Flared, Brass, 1/2-20 Thread, For Use With: Aluminum, Brass, Copper, Steel Hydraulic Tubing That Can Be Flared, 1200 psi, -65 to 250 deg F, Additional Information: 0.032 in Tube Wall Thickness, 0.45 in Center to Flare End, 0.63 in Center to End, 0.090 lb Weight