Milwaukee SHOCKWAVE™ Impact Duty 1/2" Drive 10" Extension is designed to provide superior access in tight and hard-to-reach areas while delivering exceptional impact durability for high torque applications. This extension features laser-etched size markings for quick and easy identification of the drive size and length. Its dual-hole design and ring groove enable simple attachment and removal, enhancing convenience during use. Built to meet ASME industry standards, all SHOCKWAVE Impact Duty™ Socket Extensions come with a Lifetime , ensuring long-lasting performance and reliability. Model Number: 49-66-6708