Forged from the finest chrome molybdenum alloy steel - the best choice for strength and durability. 12 point design means less wear on the fasteners. Fully guaranteed. Included in a heavy-duty blow mold case No doubt, Sunex tools offer one of the most complete and toughest Impact Socket lines around. This 1/2 universal drive impact socket set is designed to tackle the toughest jobs with solid durability and keeps them pounding job after job. Also each socket 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. This set includes: 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16, 7/8, 15/16, 1, 1-1/16, 1-1/8, 1-3/16, 1-1/4.