Features and Benefits: 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; Fully guaranteed; No doubt, Sunex tools offer one of the most complete and toughest Impact Socket lines around. This 1″ drive 2-1/4″ standard 6 point socket is designed to tackle the toughest jobs with solid durability and keeps them pounding job after job. It also features a radius corner design, causing the socket to grab the sturdy wall of the fastener instead of grabbing the corners, resulting in less wear on the fastener.