The Grainger 140J06 is a Westward 3/8-inch drive deep impact socket set. This 12-piece socket set includes sizes ranging from 10mm to 19mm, providing a versatile range of metric sockets for impact wrench use. The sockets are made from chrome vanadium steel for durability and feature a black phosphate finish to resist corrosion. With deep broached hexagons that grip fasteners tightly and ABS plastic storage cases to keep the sockets organized, this Westward impact socket set is designed for demanding automotive and industrial applications.