Box End Wrench, Alloy Steel, Satin, Head Size 1/2 in, 9/16 in, Overall Length 9 in, 60°/ OVERALL LENGTH: 5.000 INCHES MINIMUM AND 6.000 INCHES MAXIMUM LARGE END OUTSIDE DIAMETER: 0.906 INCHES MAXIMUM SMALL END OUTSIDE DIAMETER: 0.781 INCHES MAXIMUM LARGE END HEAD THICKNESS: 0.375 INCHES MAXIMUM SMALL END HEAD THICKNESS: 0.359 INCHES MAXIMUM WRENCHING SURFACE SIZE: 0.500 INCHES NOMINAL FIRST END WRENCHING SURFACE SIZE: 0.562 INCHES NOMINAL SECOND END WRENCHING SURFACE SHAPE: 12 POINT BOTH ENDS INTERNAL WRENCHING END OFFSET ANGLE: 40.0 DEGREES MINIMUM AND 65.0 DEGREES MAXIMUM ENVIRONMENTAL ATTRIBUTE CODE: SPECIAL FEATURES: FORGED STEEL SPECIAL MARKINGS: WRENCH SIZE MATERIAL: STEEL OVERALL SURFACE TREATMENT: CHROMIUM OVERALL STYLE DESIGNATOR: 42 DEEP ANGULAR OFFSET DOUBLE HEAD SPECIFICATION/STANDARD DATA: 0U583-SAE AS954 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD NONDEFINITIVE SPEC/STD DATA: 2 TYPE AND 3 CLASS AND B STYLE