Ratcheting Wrench, Alloy Steel, Black Chrome, 16 mm Head Size, 8 1/4 in Overall Length/ OVERALL LENGTH: 8.188 INCHES NOMINAL WRENCHING SURFACE SIZE: 16.0 MILLIMETERS NOMINAL BOTH ENDS WRENCHING SURFACE FLUTE QUANTITY: 12 HEAD ANGLE: 15.0 DEGREES NOMINAL WRENCHING SURFACE SHAPE: OVAL FIRST END INTERNAL WRENCHING SURFACE SHAPE: SPLINE SECOND END INTERNAL WRENCHING END OFFSET ANGLE: 15.0 DEGREES NOMINAL SPECIAL FEATURES: RATCHETING BOX END (REVERSIBLE); ANTI-SLIP DESIGN OPEN END; BLACK CHROME FINISH MATERIAL: STEEL OVERALL STYLE DESIGNATOR: 63 OFFSET