This 48-piece 3/8" impact socket set is constructed from premium Cr-v industrial-grade alloy steel with vacuum heat treatment, delivering excellent strength, durability, and impact resistance for demanding tasks. The hexagonal drive design reduces stress on fasteners, helping prevent rounding and stripping during high-torque use. Each socket features laser-etched and rolled size markings for quick identification, even in low-light environments. The set includes both deep and standard sockets ranging from 8mm to 22mm and 5/16" to 3/4", along with useful accessories such as 3" and 6" extension bars, a universal adapter, and a 1/2"F x 3/8"M adapter. A sturdy metal toolbox keeps all components organized, portable, and protected from loss during storage or transport.