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".