Socket, 1/2 in Drive Size, 8 mm Socket Size, 12-Point, Alloy Steel, Chrome Finish/ OVERALL LENGTH: 36.4 MILLIMETERS NOMINAL WRENCHING END OUTSIDE DIAMETER: 0.547 INCHES NOMINAL DRIVE END OUTSIDE DIAMETER: 0.859 INCHES NOMINAL WRENCHING END OPENING DEPTH: 0.359 INCHES NOMINAL WRENCHING SURFACE SIZE: 8.0 MILLIMETERS NOMINAL SINGLE END DRIVE SURFACE SIZE: 0.500 INCHES NOMINAL SINGLE END FEATURES PROVIDED: MANUAL TOOL WRENCHING SURFACE SHAPE: 12 POINT SINGLE END INTERNAL DRIVE END SHAPE: SQUARE SINGLE END INTERNAL MATERIAL: STEEL OVERALL SURFACE TREATMENT: CHROMIUM OVERALL STYLE DESIGNATOR: 168 INTERNAL-INTERNAL