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 * Fully guaranteed No doubt, Sunex tools offer one of the most complete and toughest Impact Socket lines around. This 1/2" drive spindle nut socket is designed to tackle the toughest jobs with solid durability and keeps them pounding job after job. Also it 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.