The SHOCKWAVE Impact Duty 1/2" Drive 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. This set is optimized to get every job done. All SHOCKWAVE Impact Duty Sockets and Extensions are backed by our Lifetime Guarantee and meet ASME industry standards. Includes 1/2 In. (inch) and 9/16 In. Shockwave impact sockets and 1/2 In. socket adapter.