The GearWrench Line of Impact Socket Sets, made from impact-grade Chrome Molybdenum Alloy Steel (Cr-Mo), offer a corrosion-resistant coating to reduce dust and feature high-visibility laser-etched and secondary hard-stamp markings for quick and permanent size identification. Sockets are designed with Surface Drive technology to eliminate fastener rounding. Select standard and deep sockets feature a parallel neck down design, providing increased access in tight spaces. Universal impact sockets are available in either standard or deep styles for additional access. Pinless Universal Impact Sockets are also available. All socket sets come packed in a blow molded case or mounted on a plastic clip rail. Each set is covered by the GearWrench Lifetime Warranty.