Features and Benefits: Forged from the finest chrome molybdenum alloy steel the best choice for strength and durability Radius corner design to extend the life of fasteners Ideal for working in tight areas Included in a heavy duty blow molded case Set includes: 3/4 in. x 13/16 in., 7/8 in. x 15/16 in., 19 mm x 21 mm flip sockets and 3 in. socket extension. No doubt, Sunex tools offer one of the most complete and toughest Impact Socket lines around. This 1/2 in. drive, deep thin wall flip impact socket set is designed to tackle the toughest jobs with solid durability and keeps them pounding job after job.