No doubt, Sunex tools offer one of the most complete and toughest Impact Socket lines around. This 1/2-inch drive extensions are designed to tackle the toughest jobs with solid durability and keeps them pounding job after job. Also each socket extension 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. Features: * Forged from the finest chrome molybdenum alloy steel – the best choice for strength and durability * Radius corner design - to extend the life of fasteners * Steel ball retainer on male end * Included in a heavy molded storage tray What"s In The Box: * 3-inch, 5-inch, 10-inch, 15-inch extensions * Molded storage tray