Forged from the finest chrome molybdenum alloy steel - the best choice for strength and durability. 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" drive hex 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: 3/4", 7/8", 1", 1-1/8", 1-1/4" and 1-3/8"