Forged from the finest chrome molybdenum alloy steel - the best choice for strength and durability. Allows better access for the hard to reach fasteners. Fully guaranteed No doubt, Sunex tools offer one of the most complete and toughest Impact Socket lines around. This 3/4" drive, 13" extension impact socket is designed to tackle the toughest jobs with solid durability and keeps them pounding job after job. Also it allows for a better reach in confined areas.