Our SHOCKWAVE Impact Duty‚¢ Socket Set features the boldest, longest-lasting markings and extreme impact durability in high torque applications. The stamped and ink-filled size marking enables you to select the right socket every time throughout the life of the socket. Engineered with high-strength forged steel for optimized performance in heavy-duty applications. The non-slip hex geometry prevents fastener rounding. Our dual-hole design and ring groove allow for easy socket attachment and removal. Sets can be kept organized in the included PACKOUT‚¢ Organizer with a clear top for easy identification of parts at a glance. The PACKOUT Organizer is part of our PACKOUT Modular Storage System, allowing for customization of storage systems to easily transport and organize tools and accessories. All SHOCKWAVE Impact Duty ‚¢ Sockets and Extensions are backed by our Lifetime Guarantee and meet ASME industry standards.