Combination Wrench, Alloy Steel, Satin, 21 mm Head Size, 11 3/4 in Overall Length/ OVERALL LENGTH: 300.2 MILLIMETERS NOMINAL WRENCHING SURFACE SIZE: 21.0 MILLIMETERS NOMINAL BOTH ENDS HEAD ANGLE: 15.0 DEGREES NOMINAL WRENCHING SURFACE SHAPE: OVAL FIRST END INTERNAL WRENCHING SURFACE SHAPE: 12 POINT SECOND END INTERNAL WRENCHING END OFFSET ANGLE: 15.0 DEGREES NOMINAL SPECIAL FEATURES: ANTI-SLIP DESIGN OPEN END; SATIN FINISH MATERIAL: STEEL OVERALL SURFACE TREATMENT: CHROMIUM OVERALL STYLE DESIGNATOR: 63 OFFSET