Milwaukee 1/2" Drive 12-mm Standard Socket w/FOUR FLAT™ Sides is designed for versatility. It features four parallel flat sides that help prevent rolling and provide wrench-ready capabilities. The socket is clearly stamped with its size for quick and easy identification. This deep socket also boasts optimized geometry to reduce bolt rounding and stripping, ensuring reliable performance in a variety of applications. Model Number: 45-34-9113