Milwaukee Impact Duty 3/8 in. Socket Packout Set, 36 PC offers extreme impact durability in high torque applications. They feature long-lasting stamped and ink-filled size markings for quick and easy socket identification. These sockets are constructed of high-strength forged steel and feature a non-slip hex geometry that prevents fastener rounding. For added convenience, the socket’s dual-hole design and ring groove makes socket attachment and removal easier. The PACKOUT™ low-profile organizer with a clear top is included, making it easier to keep parts organized.