Milwaukee 1/2 DR 3" SHOCKWAVE Impact Duty™ Socket Extension is designed to provide enhanced access in tight spaces while delivering exceptional impact durability for demanding high torque tasks. This extension features laser-etched size markings for quick and easy identification of drive size and length, helping you work more efficiently. Its dual-hole design and ring groove allow for simple attachment and removal, adding convenience to your workflow. Built to meet ASME industry standards and backed by Milwaukee’s Lifetime , this socket extension ensures lasting reliability and confidence on every job. Model Number: 49-66-6706