The Edelbrock/Russell Straight Swivel Coupler is made from light-weight aluminum and allows for the connection of hose ends to other components. They are available for AN and NPT thread applications. The fitting material is made of aluminum with red and blue anodized finishes. These fittings are designed to match up with all Russell hose and hose ends. They assure positive sealing and come in a corrosion-resistant finish.