Flare Nut Wrench, Alloy Steel, Satin, Head Size 1/2 in, 12-Point Flare Nut, 6 1/2 in, 15°/ OVERALL LENGTH: 6.438 INCHES NOMINAL WRENCHING SURFACE SIZE: 0.500 INCHES NOMINAL BOTH ENDS WRENCHING SURFACE SHAPE: 12 POINT BOTH ENDS INTERNAL MATERIAL: STEEL OVERALL SURFACE TREATMENT: CHROMIUM OVERALL STYLE DESIGNATOR: 130 FLARE NUT DOUBLE END SPECIFICATION/STANDARD DATA: 0U583-SAE AS4167 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD NONDEFINITIVE SPEC/STD DATA: 1 TYPE AND 2 CLASS AND C STYLE