Russell 660460 Blue Anodized Aluminum -6AN Flare to 3/8 NPT Pipe Adapter, Model: 660460, Car & Vehicle Accessories / Parts Precision machined to ensure accurate thread engagement Provides maximum protection against corrosion 37 degree sealing angle guarantees a positive seal at maximum operating pressures Straight -6 AN to 3/8 NPT (National Pipe Tapered) pipe size Has a blue anodized finish