Milwaukee SHOCKWAVE™ Impact Duty™ 3/8" Drive 20-mm 6-Point Socket extreme impact durability in high torque applications. This socket is crafted from high-strength forged steel and features a non-slip hex geometry designed to prevent fastener rounding, ensuring reliable performance. Its dual-hole design and ring groove provide added convenience for easier socket attachment and removal. Optimized for use with 1/2-inch drive impact wrenches, drivers, ratchets, and adapters, this socket also includes long-lasting stamped size markings for quick and easy identification, making your work more efficient and precise. Model Number: 49-66-6738