Box End Wrench, Alloy Steel, Chrome, Head Size 1 in, 1 1/16 in, Overall Length 15 in, 0°/ OVERALL LENGTH: 15.000 INCHES NOMINAL WRENCHING SURFACE SIZE: 1.000 INCHES NOMINAL FIRST END WRENCHING SURFACE SIZE: 1.125 INCHES NOMINAL SECOND END WRENCHING SURFACE SHAPE: 12 POINT BOTH ENDS INTERNAL MATERIAL: STEEL OVERALL SURFACE TREATMENT: CHROMIUM OVERALL STYLE DESIGNATOR: 144 STRAIGHT DOUBLE HEAD