Edelbrock/Russell 610110 Red/Blue Anodized Aluminum -10AN 45-Degree Hose End Designed to be used with Proflex, Prorace and Proclassic hose Lightweight aluminum hose ends are completely reusable Unique taper design ensures easy assembly 37 degree angled sealing surface guarantees a positive anti-leak seal (does not require a sealing compound or Teflon tape) Accepts a wide variety of lightweight aluminum AN style adapter and carburetor fittings