Flare Nut Wrench, Alloy Steel, Satin, Head Size 7/16 in, 12-Point Flare Nut, 6 in, 15°, SAE/ OVERALL LENGTH: 6.007 INCHES MINIMUM WRENCHING SURFACE SIZE: 0.437 INCHES NOMINAL BOTH ENDS WRENCHING SURFACE SHAPE: HEXAGON FIRST END INTERNAL WRENCHING SURFACE SHAPE: 12 POINT SECOND END INTERNAL MATERIAL: STEEL OVERALL SURFACE TREATMENT: CHROMIUM OVERALL STYLE DESIGNATOR: 131 STRAIGHT JAW SPECIFICATION/STANDARD DATA: 0U583-SAE AS4167 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD NONDEFINITIVE SPEC/STD DATA: 1 TYPE AND 2 CLASS AND C STYLE