Forged from the finest chrome molybdenum alloy steel – the best choice for strength and durabilityRadius corner design-to extend the life of the fastenerIdeal for working in tight areasIncluded in a heavy duty blow molded caseFully guaranteedNo doubt, Sunex tools offer one of the most complete and toughest Impact Socket lines around. This 3/8” deep drive, 12 point impact socket set 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 the following sizes: 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm and 19mm.