Evil energy is our brand,we're a direct and professional manufaturer in China,one of greatest manufacturer and exporter in Tuning parts include intake system,exhaust system,engine system,cooling system,interior&exterior parts.Accept customized order with minimum quantity.Manufactured using aluminum alloys that meet or exceed minimum requirements for aerospace hose fittings.The AN thread is a particular type of fitting used to connect flexible hoses and rigid metal tubing that carry fluid. It became popular for usage within Professional racing for the ability to easily customize new lines. From there it's usage spread to the aftermarket automotive performance field for its ease in adaptability, upgradability and durability.Materil : Aluminum Alloy . Package : 1pc . Each component is precision-machined to exact tolerances for trouble-free performance. Bulkhead adapters provide an easy way to securely connect your lines together through firewalls, panels, etc.The fitting made of T6061 Aluminum,high strength and good durability. Package : 1 pc.