Socket, 3/4 in Drive Size, 31 mm Socket Size, 12-Point, Alloy Steel, Satin Finish/ OVERALL LENGTH: 56.4 MILLIMETERS NOMINAL WRENCHING SURFACE SIZE: 31.0 MILLIMETERS NOMINAL SINGLE END DRIVE SURFACE SIZE: 0.750 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 SUPPLEMENTARY FEATURES: INDUSTRIAL QUALITY (IQ) TOOLS PROGRAM ITEM