Our SHOCKWAVE Impact Duty 1/2 in drive six-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. We engineered these six-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 our lifetime assurance and meet ASME industry standards.Optimized for use with 1/2 in drive impact wrenches, drivers, ratchets and adaptersStamped and ink filled diameter markings for wear resistanceSix point design made with forged impact steel for durability in high-torque applications backed by our lifetime assuredDual-hole design and groove for easier attachmentNon-slip hex geometry to prevent socket and fastener roundingLaser etched part number