Milwaukee 1/4" Drive 9/16" SAE Socket w/ FOUR FLAT™ Sides is designed for versatility. This socket features four parallel flat sides that help prevent rolling and provide wrench-ready capabilities, making your work more efficient. It is clearly stamped with its size for quick and easy identification. The optimized geometry of this standard socket reduces bolt rounding and stripping, ensuring a secure grip and longer tool life. Whether you are a professional or a DIY enthusiast, this socket delivers reliable performance for your fastening needs. Model Number: 45-34-9021