2pcs AN6 AN8 AN10 Male Flare to 5/16" 3/8" Fuel Hardline Pipe Fittings Adapter Connector Alloy Black for 5/16" 3/8" inch OD Alloy Pipe 1. Product Description1. This product with brass insert lightweight billet CNC machined 6061-T6 Aluminum black anodized2. Provides an aggressive engine look, lasts twice as long as traditional anodized fit3. Manufactured to exacting standards for tight, leak-free connections. Connect 3/8" wire to -6 male fittings4. You no longer have to worry about flaring and splitting aluminum tubing to make connections5. Only applies to stainless steel or aluminum hardline.6, provide a positive seal and come in a corrosion-resistant finish.2 .About this itemHARDLINE FITTING STANDARD PARTS: Only compatible with hardline. 6AN to 3/8 inch, thread size of 6AN is 9/16UNF. It is fit for 3/8" OD hardline, please measure before perchase. AIRCRAFT QUALITY MATERIAL: 6 AN male flare threads (9/16-18) for 3/8 inch pipe hose fittings brass connector insert lightweight 6061-T6 CNC machined billet aluminum black anodized black anodized finish.Tightness and corrosion resistance Manufactured to exacting standards for tight, leak-proof connections. Connect 3/8" tubing to -6 male fittings black anodized finish ensures a positive seal and comes in a corrosion resistant finish.Wide Range of Applications: This 3/8 hardline to 6an fitting is widely used in brake system/air and fuel delivery /engine modification/oil system/cooling system.Working pressure and temperaturesMaximum working pressure: 4000PSI, working temperature: -65 deg; f to 252 deg; f.3. Material and color: Material: 6061-T6 cnc machined aluminum Billet Color: Anodized Black 4. Package include: 2 .We are factory, with CNC machine, we can customize your requested size or produce other CNC products.Or oxidized to any color.