Ratcheting Wrench, Alloy Steel, Black Chrome, 11 mm Head Size, 6 1/2 in Overall Length/ OVERALL LENGTH: 6.563 INCHES NOMINAL WRENCHING SURFACE SIZE: 11.0 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 SPECIFICATION/STANDARD DATA: 05047-ASME B107.100 CAT 66 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD NONDEFINITIVE SPEC/STD DATA: 2 TYPE