The Grainger 16N613 is a Westward brand 1/4-inch drive 6-point socket set. This 13-piece socket set includes sizes 1/4", 5/16", 11/32", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", and 15/16". The sockets are made from chrome vanadium steel for durability and have a black phosphate finish to resist corrosion. This set comes organized in a molded case for convenient storage and portability. The sockets meet ANSI standards and have a lifetime guarantee. This socket set provides a range of standard and deep well sockets for automotive and machinery repair.