Box End Wrench, Alloy Steel, Satin, Head Size 9/16 in, 5/8 in, Overall Length 6 1/2 in, 15°/ OVERALL LENGTH: 6.625 INCHES NOMINAL WRENCHING SURFACE SIZE: 0.562 INCHES NOMINAL FIRST END WRENCHING SURFACE SIZE: 0.625 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