Box End Wrench, Alloy Steel, Chrome, Head Size 3/8 in, 7/16 in, Overall Length 7 3/4 in, 7.5°/ OVERALL LENGTH: 7.750 INCHES NOMINAL WRENCHING SURFACE SIZE: 0.375 INCHES NOMINAL FIRST END WRENCHING SURFACE SIZE: 0.438 INCHES NOMINAL SECOND END WRENCHING SURFACE SHAPE: 12 POINT BOTH ENDS INTERNAL WRENCHING END OFFSET ANGLE: 15.0 DEGREES NOMINAL SPECIAL FEATURES: FULL POLISH MATERIAL: STEEL OVERALL SURFACE TREATMENT: CHROMIUM OVERALL STYLE DESIGNATOR: 41 ANGULAR OFFSET DOUBLE HEAD SPECIFICATION/STANDARD DATA: 0U583-SAE AS954 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD NONDEFINITIVE SPEC/STD DATA: 2 TYPE AND 1 CLASS AND A STYLE