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, 2-Inch deep impact socket, Weight: 1.0 Pounds, Manufacturer: Sunex International