Features: Good quality, durable material aluminum alloy with abrasion resistance and corrosion resistance. The Black anodized treatment and the tight and leakproof connections could improve durability and strength. Designed for smooth flow, easy assembly, and longer service life. Universal use to transport fuel lines, fuel, water, fluid, and airlines. A universal application like the fuel system, such as fuel hose extends, the line connects to the fuel filter, fuel pump, and cooler system. Specification: Type: Flare Union Adapter Angle: Straight Color: Black Material: Aluminum Alloy Size: 4AN Male to M12x1.25mm Male Total Size: 29x16mm / 1.14"x0.63"(L*W) Male Thread Size: 4AN / M12x1.25mm Inner Diameter: 4.3mm / 0.17" Note:A professional installer is recommended, without installation instructions. Please measure before purchase.Package Included:1 x Flare Coupler Fitting Adapter