The MILWAUKEE® 6-Piece SHOCKWAVE Impact Duty™ 3/8" Drive Metric Standard Socket Set (49-66-7036) 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 Standard Socket every time throughout the life of the socket. Milwaukee sockets are engineered with high strength forged steel for optimized performance in heavy-duty applications. The non-slip hex geometry prevents fastener rounding, and a dual-hole design and ring groove allow for easy socket attachment and removal. All MILWAUKEE® SHOCKWAVE Impact Duty™ Sockets are backed by a Lifetime Guarantee and meet ASME industry standards.