Features and Benefits:Forged from the finest chrome molybdenum alloy steel the best choice for strength and durabilityRadius corner design to extend the life of fastenersIncluded in a heavy molded storage traySize is metric No doubt, Sunex tools offer one of the most complete and toughest Impact Socket lines around. This 1/2 in. drive, 6 point deep impact socket set is designed to tackle the toughest jobs with solid durability and keeps them pounding job after job. Set includes: 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm, 21 mm, 22 mm, 26 mm and 27 mm sockets. WARNING: This product can expose you to Nickel (Metallic) a chemical known to the State of California to cause Cancer. For more information go to www.P65Warnings.ca.gov.