Box End Wrench, Alloy Steel, Satin, Head Size 7/16 in, 1/2 in, Overall Length 5 3/4 in, 15°/ OVERALL LENGTH: 5.750 INCHES NOMINAL WRENCHING SURFACE SIZE: 0.438 INCHES NOMINAL FIRST END WRENCHING SURFACE SIZE: 0.500 INCHES NOMINAL SECOND END WRENCHING SURFACE SHAPE: 12 POINT BOTH ENDS INTERNAL MATERIAL: STEEL OVERALL SURFACE TREATMENT: CHROMIUM OVERALL STYLE DESIGNATOR: 52 HALF-MOON DOUBLE HEAD