Sunex 2265PT 1/2-Inch Drive 13/16-Inch 5-Point Impact Socket Forged from the finest chrome molybdenum alloy steel-the best choice for strength and durability Radius corner design-to extend the life of fasteners The design drives the side of the fastener instead of the corner Provides increased strength, but also avoids rounding of rusted or damaged fasteners 1/2-Inch drive, 13/16,-Inch 5 point impact socket