Edelbrock/Russell 610080 Red/Blue Anodized Aluminum -4AN 45-Degree Hose End Lightweight aluminum hose ends are completely reusable 37 degree angled sealing surface guarantees a positive anti-leak seal Unique taper design ensures easy assembly Size of the 45 degree hose end and the adapter is -4 AN with the female thread attachment Has a corrosion resistant anodized finish