Russell 660580 Blue Anodized Aluminum -8AN Tube Nut Fittings - Pack of 2 Precision machined to ensure precise thread engagement Lightweight aluminum fittings are designed to match up with all Russell performance hose and hose ends 37 degree sealing angle guarantees a positive seal at maximum operating pressures Tube size is 1/2" with -8 AN This wide variety of lightweight aluminum adapter fittings allow for the connection of hose ends to almost any component