MILWAUKEE 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. The Milwaukee dual-hole design and ring groove allow for easy socket attachment and removal. Sets can be kept organized in the included MILWAUKEE PACKOUT Compact Low-Profile Organizer with a clear top for easy identification of parts at a glance. The Low-Profile Organizer is part of the MILWAUKEE PACKOUT Modular Storage System, allowing for customization of storage systems to easily transport and organize tools and accessories. The cases are impact-resistant and nest together for easy stacking and storage. All Milwaukee SHOCKWAVE Impact Duty Sockets and Extensions are backed by Milwaukee's Lifetime Guarantee and meet ASME industry standards.