Features: The thread size of 10an is 7/8-14 UNF. Bulkhead fuel fitting adapter with good quality, durable material aluminum alloy with abrasion resistance and corrosion resistance. The black anodized treatment and the tight and leakproof connections could improve the durability and strength of the straight bulkhead flare. Designed for smooth flow, easy assembly, and longer service life. Bulkhead fitting connector is universal use to transport fuel lines, fuel, water, fluid, and airlines. A universal application like the fuel system, such as fuel hose extends, and the line connects to the fuel filter, fuel pump, and cooler system.Specification: Type: 10AN Male Flare Bulkhead Fitting, Angle: Straight, Color: Black, Material: Aluminum Alloy, Total Size: 68x31mm / 2.68"x1.22"(L*W), Male Thread Size: AN10, Inner Diameter: 12mm / 0.47", The thread size: 7/8-14 UNF, Note: A professional installer is recommended, without installation instruction. Please measure before purchase. Package Included: 1 x Male Straight Bulkhead Flare Fitting Union Adapter