Milwaukee's SHOCKWAVE Impact Duty? 1" Drive 6 Point Sockets feature the boldest, longest-lasting markings and extreme impact durability in high torque applications. The stamped and ink-filled size markings enable you to select the right socket every time throughout the life of the socket. Milwaukee engineered these 6-point standard sockets with high-strength forged steel for optimized performance in heavy-duty applications, and a non-slip hex geometry prevents fastener rounding. The dual-hole design and ring groove allow for easy socket attachment and removal. All MILWAUKEE? SHOCKWAVE Impact Duty? Sockets are backed by Milwaukee's Lifetime Guarantee and meet ASME industry standards. Optional Retaining Rings available (49-66-6745 and 49-66-6746).