Milwaukee 1/4" Drive 9-mm Deep Socket w/ FOUR FLAT™ Sides is designed for versatility, making it an essential addition to any toolbox. This socket features four parallel flat sides that help prevent rolling and wrench-ready capabilities for added convenience. It is clearly stamped with its size, allowing for quick and easy identification during use. Engineered with optimized geometry, this standard socket reduces the risk of bolt rounding and stripping, ensuring a secure and efficient fit every time. Model Number: 45-34-9047