This brass flare tube fitting is widely used in pipe connections for air conditioning, hydraulic and pneumatic systems, HVAC, automotive, humidifiers, grills, and fire pit. Also, the union fitting is suitable for fuel, gas systems, and refrigeration equipment. It can be used with copper, brass, aluminum, and other hydraulic tubes that can be flared. Specification Material: Brass Color: Brass Total Size: 33 x 27 mm / 1.3 x 1.1 inch(L*W) Flare Tube OD Size: 5/2 female flare X 1/2 male flare Packing List: 3Pcs x Brass Flare Tube Fitting Advantage 1. The tube fitting is made from thickened brass, strong, durable, anti-corrosion, and with high and low-temperature resistance. It can be used under a temperature range: -53? to 121? (-65 to 250 Degrees Fahrenheit) 2. Clear and standard threads ensure a good connection and avoid leakage, and come with a protective cap to avoid thread damage. 3. The hex part allows you to tighten the fitting with a wrench easily. 4. The fitting contains an SAE 45-degree flare connection on both ends, allowing you to make a welding-free connection. Instruction 1. Connect the male flare end to a flared pipe with brass nut(not included) or connect it to a female flare end with same thread size directly. 2.Connect the female flare end to a male flare end with same thread size directly. Note Please confirm your tube or pipe size before ordering. The flare size of the connector refers to the OD size of the pipes to be connected, not the actual thread size.