Flare Nut Wrench, Alloy Steel, Satin, Head Size 1/2 in, 9/16 in, 6-Point Flare Nut, 7 1/2 in/ OVERALL LENGTH: 7.562 INCHES NOMINAL WRENCHING SURFACE SIZE: 0.500 INCHES NOMINAL FIRST END WRENCHING SURFACE SIZE: 0.562 INCHES NOMINAL SECOND END WRENCHING SURFACE SHAPE: HEXAGON BOTH ENDS INTERNAL MATERIAL: STEEL OVERALL SURFACE TREATMENT: CHROMIUM OVERALL STYLE DESIGNATOR: 130 FLARE NUT DOUBLE END