Edelbrock/Russell 614203 Blue Anodized Aluminum Straight Female -3AN to Male 1/8" NPT Adapter Fitting 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 Has a blue anodized finish Precision machined to ensure precise thread engagement NPT thread size is 1/8", -3 AN