Phenix Compression Swivel Hose Ends are constructed from lightweight 6061 aluminum and designed for smooth flow, easy assembly, and longer life. All elbow ends are built from one-piece billet tube construction, avoiding leakable braze joints. Viton O-Ring seal allows 360 degree rotation. 37 degree AN flare assures leak proof sealing surface eliminating the need for taping. Compatible with all AN adapter fittings. Made in USA.