Genius Tools 477838, Deep Hand Socket 1-3/16 Inch 1/2 Inch Drive 12-Point Heavy-Duty Chrome Finish. 1/2" Inch Drive Size with an overall length of 78mm (or 3.07 Inches). Made from Chromium-vanadium Steel Alloy for high strength and durability while having anti-corrosive properties. Sizes are stamped for permanent and easy identification of size.